Main

  • Reproduction

    Reproduction

    • This piglix contains articles or sub-piglix about Reproduction

    • Asexual reproduction

    • This piglix contains articles or sub-piglix about Asexual reproduction


      Wikipedia
    • Breeding

    • This piglix contains articles or sub-piglix about Breeding


      Wikipedia
    • Developmental biology

    • This piglix contains articles or sub-piglix about Developmental biology


      Wikipedia
    • Fertility

    • This piglix contains articles or sub-piglix about Fertility


      Wikipedia
    • Plant reproduction

    • This piglix contains articles or sub-piglix about Plant reproduction


      Wikipedia
    • Reproduction in animals

    • This piglix contains articles or sub-piglix about Reproduction in animals


      Wikipedia
    • Reproductive ecology


    • Reproductive system

    • This piglix contains articles or sub-piglix about Reproductive system


      Wikipedia
    • Self-replication

    • This piglix contains articles or sub-piglix about Self-replication


      Wikipedia
    • Sexual reproduction


    • Reproduction

    • Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parents". Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. There are two forms of reproduction: ... Read »


      Wikipedia
    • Adelphogamy

    • Adelphogamy is a form of sexual partnership between sibling eukaryotes, for example in some species of fungi, flowering plants or ants, or in humans. In sociology, the term adelphogamy may also refer to fraternal polyandry or to a relationship between a brother and sister. ... Read »


      Wikipedia
    • Allogamy

    • "Allogamy" (cross-fertilization) is a term used in the field of biological reproduction describing the fertilization of an ovum from one individual with the spermatozoa of another. By contrast, autogamy is the term used for self-fertilization. In humans, the fertilization event is an instance of allogamy. Self-fertiliz ... Read »


      Wikipedia
    • Alternation of generations

    • Alternation of generations (also known as metagenesis) is a term used to describe the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct sexual haploid and asexual diploid stages. In these groups, a multicellular gametophyte, which is haploid with ... Read »


      Wikipedia
    • Anisogamy

    • Anisogamy (also called heterogamy) is the form of sexual reproduction that involves the union or fusion of two gametes, which differ in size and/or form. (The related adjectives are anisogamous and anisogamic). The smaller gamete is considered to be male (sperm cell), whereas the larger gamete is regarded as female (eg ... Read »


      Wikipedia
    • Apicomplexan life cycle

    • Apicomplexans, a group of intracellular parasites, have life cycle stages evolved to allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism is typified by a cellular variety with a distinct morphology and bioch ... Read »


      Wikipedia
    • Artificial reproduction

    • Artificial reproduction/propagation is the creation of new life by other than the natural means available to an organism. Examples include artificial insemination, in vitro fertilization, cloning and embryonic splitting, or cleavage. Cutting plants' stems and placing them in compost is also a form of artificial reprod ... Read »


      Wikipedia
    • Associated reproductive pattern

    • An associated reproductive pattern is a seasonal change in reproduction which is highly correlated with a change in gonad and associated hormone. This article incorporates material from the Citizendium article "", which is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License but not under th ... Read »


      Wikipedia
    • Autotoky

    • Autotoky is uniparental reproduction by self-fertilization or by parthenogenesis. The word comes from the Greek words auto meaning self and tokos meaning birth. ... Read »


      Wikipedia
    • Biological dispersal

    • Biological dispersal refers to both the movement of individuals (animals, plants, fungi, bacteria, etc.) from their birth site to their breeding site ('natal dispersal'), as well as the movement from one breeding site to another ('breeding dispersal'). Dispersal is also used to describe the movement of propagules such ... Read »


      Wikipedia
    • Biological life cycle

    • In biology, a biological life cycle is a series of changes in form that an organism undergoes, returning to the starting state. "The concept is closely related to those of the life history, development and ontogeny, but differs from them in stressing renewal." Transitions of form may involve growth, asexual reproductio ... Read »


      Wikipedia
    • Biotic potential

    • Biotic potential is described by the unrestricted growth of populations resulting in the maximum growth of that population. Biotic potential is the highest possible vital index of a species; therefore, when the species has its highest birthrate and lowest mortality rate. The biotic potential is the quantitative expres ... Read »


      Wikipedia
    • Brachymeiosis

    • Brachymeiosis was a hypothesized irregularity in the sexual reproduction of ascomycete fungi, a variant of meiosis following an "extra" karyogamy (nuclear fusion) step. The hypothesized process would have transformed four diploid nuclei into eight haploid ones. The current scientific consensus is that brachymeiosis doe ... Read »


      Wikipedia
    • Chimera (genetics)

    • A genetic chimerism or chimera (also spelled chimaera) is a single organism composed of cells from different zygotes. This can result in male and female organs, two blood types, or subtle variations in form. Animal chimeras are produced by the merger of multiple fertilized eggs. In plant chimeras, however, the distinct ... Read »


      Wikipedia
    • Continuous breeders

    • Continuous breeders are animal species that can breed or mate throughout the year. This includes humans and apes (chimpanzees, gorillas, orangutans, and gibbons), who can have a child at any time of year. In continuous breeders, females are sexually receptive during estrus, at which time ovarian follicles are maturing ... Read »


      Wikipedia
    • Dispersal vector

    • In the biology of dispersal, a dispersal vector is "an agent transporting seeds or other dispersal units". Dispersal vectors may include factors, such as animals, or abiotic factors, such as the wind or the ocean. Humans have been acting as dispersal vectors since we began moving around the planet, bringing non-nativ ... Read »


      Wikipedia
    • Fertilisation

    • Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, conception, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism. In animals, the process involves the fusion of an ovum with a sperm, which first create ... Read »


      Wikipedia
    • Final maturation induction

    • Induction of final maturation of oocytes is a procedure that is usually performed as part of controlled ovarian hyperstimulation to render the oocytes fully developed and thereby resulting in optimal pregnancy chances. It is basically a replacement for the luteinizing hormone (LH) surge whose effects include final matu ... Read »


      Wikipedia
    • Gametangium

    • A gametangium (plural: gametangia) is an organ or cell in which gametes are produced that is found in many multicellular protists, algae, fungi, and the gametophytes of plants. In contrast to gametogenesis in animals, a gametangium is a haploid structure and formation of gametes does not involve meiosis. Depending ... Read »


      Wikipedia
    • Gametogamy

    • Gametogamy is sexual fusion – copulation or fertlization – of two single-celled gametes of different sex and the union of the their gamete nuclei (and corresponding extranuclear structures) giving the zygote nucleus, as well as whole zygotic content. According to its morphology, size and other properties, mo ... Read »


      Wikipedia
    • Genitalia of female spotted hyenas

    • Genitalia of female spotted hyenas

      The spotted hyena (Crocuta crocuta), also known as the laughing hyena, is a species of hyena, currently classed as the sole member of the genus Crocuta, native to Sub-Saharan Africa. It is listed as being of least concern by the IUCN on account of its widespread range and large numbers estimated between 27,000 and 47,0 ... Read »


      Wikipedia
    • Gonochorism

    • In biology, gonochorism (Greek offspring + disperse) or unisexualism or gonochory describes the state of having just one of at least two distinct sexes in any one individual organism. The term is most often used with animals, in which the individual organisms are often gonochorous. Gonochory is less common in plants. F ... Read »


      Wikipedia
    • Hermaphrodite

    • In biology, a hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Many taxonomic groups of animals (mostly invertebrates) do not have separate sexes. In these groups, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either ... Read »


      Wikipedia
    • Heterothallism

    • Heterothallic species have sexes that reside in different individuals. The term is applied particularly to distinguish heterothallic fungi, which require two compatible partners to produce sexual spores, from homothallic ones, which are capable of sexual reproduction from a single organism. In heterothallic fungi, two ... Read »


      Wikipedia
    • History of in vitro fertilisation

    • The history of in vitro fertilisation goes back more than half a century. There was a transient biochemical pregnancy reported by Australian Foxton School researchers in 1953. John Rock was the first to extract an intact fertilised egg. In 1959, Min Chueh Chang at the Worcester Foundation, proved fertilisation in vitr ... Read »


      Wikipedia
    • Homogamy (biology)

    • Homogamy is used in biology in three separate senses: ... Read »


      Wikipedia
    • Homothallism

    • Homothallic refers to the possession, within a single organism, of the resources to reproduce sexually i. e having male and female reproductive structures on the same thallus. The opposite sexual functions are performed by different cells of a single mycelium.[2] It can be contrasted to heterothallic. It is often use ... Read »


      Wikipedia
    • In vitro fertilisation

    • In vitro fertilisation

      In vitro fertilisation (or fertilization; IVF) is a process by which an egg is fertilised by sperm outside the body: in vitro ("in glass"). The process involves monitoring and stimulating a woman's ovulatory process, removing an ovum or ova (egg or eggs) from the woman's ovaries and letting sperm fertilise them in a li ... Read »


      Wikipedia
    • Intra-species recognition

    • Intra-species recognition is the recognition by a member of a species of a conspecific (another member of the same species). In many species, such recognition is necessary for procreation. Different species may employ different methods, but all of them are based on one or more senses (after all, this is how the organi ... Read »


      Wikipedia
    • Intraspecific breeding

    • Intraspecific breeding is sexual reproduction within a species. It can refer to: ... Read »


      Wikipedia
    • Isogamy

    • Isogamy is a form of sexual reproduction that involves gametes of similar morphology (similar shape and size), differing in general only in allele expression in one or more mating-type regions. Because both gametes look alike, they cannot be classified as "male" or "female." Instead, organisms undergoing isogamy are sa ... Read »


      Wikipedia
    • Litter (animal)

    • A litter is the multiple offspring at one birth of animals from the same mother and usually from one set of parents. The word is most often used for the offspring of mammals, but can be used for any mammal that gives birth to multiple young. Biology In comparison, a group of eggs and the offspring that hatch from them ... Read »


      Wikipedia
    • Megagametogenesis

    • Megagametogenesis is the development of a megaspore into an embryo sac, which is the gametophyte - though a highly reduced one - stage in the life cycle of vascular plants. In eudicot plants, the entire process happens inside the ovule of a plant. The details of the process vary by species, but the process described h ... Read »


      Wikipedia
    • Megaspore

    • Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These plants have two spore types, megaspores and microspores. Generally speaking, the megaspore, or large spore, germinates into a female gametophyte, which produces egg cells. These are fertilized by sperm produced by th ... Read »


      Wikipedia
    • Microchimerism

    • Microchimerism (abbreviated Mc) is the presence of a small number of cells that originate from another individual and are therefore genetically distinct from the cells of the host individual. This phenomenon may be related to certain types of autoimmune diseases; however, the mechanisms responsible for this relationshi ... Read »


      Wikipedia
    • Micropyle (zoology)

    • A micropyle is a pore in the membrane covering the ovum, through which a sperm enters. Micropyles are also found in sporozoites of some digenetic microorganisms such as Plasmodium at the anterior part of the cell that ultimately leads towards the apical cap. ... Read »


      Wikipedia
    • Offspring

    • In biology, offspring are the young born of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms. Collective offspring may be known as a brood or progeny in a more general way. This can refer to a set of simultaneous offspring, such as the chicks hatched from one ... Read »


      Wikipedia
    • Oocyte selection

    • Oocyte selection is a procedure that is performed prior to in vitro fertilization, in order to use oocytes with maximal chances of resulting in pregnancy. In contrast, embryo selection takes place after fertilization. Chromosomal evaluation may be performed. Embryos from rescued in vitro-matured metaphase II (IVM-MII) ... Read »


      Wikipedia
    • Oospore

    • An oospore is a thick-walled sexual spore that develops from a fertilized oosphere in some algae, fungi, and Oomycetes. In Oomycetes, oospores can also result from asexual reproduction, by apomixis. ... Read »


      Wikipedia
    • Operational sex ratio

    • In the evolutionary biology of sexual reproduction, operational sex ratio (OSR) is the ratio of sexually competing males that are ready to mate to sexually competing females that are ready to mate, or alternatively the local ratio of fertilizable females to sexually active males at any given time. Its difference from t ... Read »


      Wikipedia
    • Opportunistic breeders

    • Flexible or opportunistic breeders mate whenever the conditions of their environment become favorable. Their ability and motivation to mate are primarily independent of day-length (photoperiod) and instead rely on cues from short-term changes in local conditions like rainfall, food abundance and temperature. Another fa ... Read »


      Wikipedia
    • Paratomy

    • Paratomy is a form of asexual reproduction in animals where the organism splits in a plane perpendicular to the antero-posterior axis and the split is preceded by the "pregeneration" of the anterior structures in the posterior portion.The developing organisms have their body axis aligned i.e. they develop in a head to ... Read »


      Wikipedia
    • Parent–offspring conflict


    • Polyspermy

    • In biology, polyspermy describes an egg that has been fertilized by more than one sperm. Diploid organisms normally contain two copies of each chromosome, one from each parent. The cell resulting from polyspermy, on the other hand, contains three or more copies of each chromosome—one from the egg and one each from ... Read »


      Wikipedia
    • Products of conception

    • Products of conception, abbreviated POC, is a medical term used for the tissue derived from the union of an egg and a sperm. It encompasses anembryonic gestation (blighted ovum) which does not have a viable embryo. In the context of tissue from a dilation and curettage, the presence of POC essentially excludes an ecto ... Read »


      Wikipedia
    • Reproductive biology

    • Reproductive biology is a study mainly involving the reproductive system and sex organs. It is closely related to reproductive endocrinology and infertility, reproductive physiology and developmental biology. It is also in many countries a field of laboratory medicine including assisted reproductive technology, sperm ... Read »


      Wikipedia
    • Reproductive isolation

    • The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation. They prevent members of different species from producing offspring, or ensure that any offspring are sterile. These barriers maintain the integrity of a species by reducin ... Read »


      Wikipedia
    • Reproductive synchrony

    • Reproductive synchrony is a term used in evolutionary biology and behavioural ecology. Reproductive synchrony — sometimes termed 'ovulatory synchrony' — may manifest itself as 'breeding seasonality'. Where females undergo regular menstruation, 'menstrual synchrony' is another possible term. Reproduction is s ... Read »


      Wikipedia
    • Self-replicating machine

    • A self-replicating machine is a type of autonomous robot that is capable of reproducing itself autonomously using raw materials found in the environment, thus exhibiting self-replication in a way analogous to that found in nature. The concept of self-replicating machines has been advanced and examined by Homer Jacobsen ... Read »


      Wikipedia
    • Selfing

    • Selfing or self-fertilization is the union of male and female gametes and/or nuclei from same haploid, diploid, or polyploid organism. It is an extreme degree of inbreeding. Selfing is widespread – from unicellular organisms – to the most complex hermaphroditic plants and animals (especially invertebrates). ... Read »


      Wikipedia
    • Semelparity and iteroparity

    • Semelparity and iteroparity are two classes of possible reproductive strategies available to living organisms. A species is considered semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characterized by multiple reproductive cycles over the course of its lifetime. ... Read »


      Wikipedia
    • Sequential hermaphroditism

    • Sequential hermaphroditism (called dichogamy in botany) is a type of hermaphroditism that occurs in many fish, gastropoda and plants. Sequential hermaphroditism occurs when the individual changes sex at some point in its life. They can change from a male to female (protandry), or from female to male (protogyny) or from ... Read »


      Wikipedia
    • Sexual and reproductive health and rights

    • Sexual and reproductive health and rights or SRHR is the concept of human rights applied to sexuality and reproduction. It is a combination of four fields that in some contexts are more or less distinct from each other, but less so or not at all in other contexts. These four fields are sexual health, sexual rights, rep ... Read »


      Wikipedia
    • Sexual maturity

    • Sexual maturity is the age or stage when an organism can reproduce. It is sometimes considered synonymous with adulthood. In humans, the process of sexually maturation is termed puberty. Most multicellular organisms are unable to sexually reproduce at birth (or germination), and depending on the species, it may be day ... Read »


      Wikipedia
    • Sexual reproduction

    • Sexual reproduction is a form of reproduction where two morphologically distinct types of specialized reproductive cells called gametes fuse together, involving a female's large ovum (or egg) and a male's smaller sperm. Each gamete contains half the number of chromosomes of normal cells. They are created by a specializ ... Read »


      Wikipedia
    • Somatic effort

    • Somatic effort refers to the total investments of an organism in its own development, differentiation, and maintenance which consequently increases its reproductive potential. ... Read »


      Wikipedia
    • Sperm sorting

    • Sperm sorting is a means of choosing what type of sperm cell is to fertilize the egg cell. Several conventional techniques of sperm sorting have been routinely used in assisted reproductive technologies including the method of density gradient centrifugation or swim-up. Newly applied methods such as flow cytometry expa ... Read »


      Wikipedia
    • Spore

    • In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavorable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa.Bacterial spores are not part of a sexual cycle but are resista ... Read »


      Wikipedia
    • Sporogenesis

    • Sporogenesis is the production of spores in biology. The term is also used to refer to the process of reproduction via spores. Reproductive spores were found to be formed in eukaryotic organisms, such as plants, algae and fungi, during their normal reproductive life cycle. Dormant spores are formed, for example by cert ... Read »


      Wikipedia
    • Sterile fungi

    • The sterile fungi, or mycelia sterilia are a group of fungi that do not produce any known spores, either sexual or asexual. This is considered a form group, not a taxonomic division, and is used as a matter of convenience. Because these fungi do not produce spores, it is impossible to use traditional methods of morphol ... Read »


      Wikipedia
    • Superfecundation

    • Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse. The term superfecundation is derived from fecund, meaning the ability to produce offspring. Heteropaternal superfecundation occurs when two different males father fraternal twins. In common u ... Read »


      Wikipedia
    • Teleomorph, anamorph and holomorph

    • In mycology, the terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota: Fungi are classified primarily based on the structures associated with sexual reproduction, which tend to be evolutionarily conserved. However, many fungi reproduce on ... Read »


      Wikipedia
    • Telescoping generations

    • Telescoping generations can occur in parthenogenetic species, such as aphids or other life forms that have the ability to reproduce without ovum fertilization. This occurrence is characterized by a viviparous female having a daughter growing inside her that is also parthenogenetically pregnant with a daughter cell. Th ... Read »


      Wikipedia
    • Telium

    • Telium, plural Telia, are structures produced by rust fungi as part of the reproductive cycle. They are typically yellow or orange drying to brown or black and are exclusively a mechanism for the release of teliospores which are released by wind or water to infect the alternate host in the rust life-cycle. ... Read »


      Wikipedia
    • Voltinism

    • Voltinism is a term used in biology to indicate the number of broods or generations of an organism in a year. The term is most often applied to insects, and is particularly in use in sericulture, where silkworm varieties vary in their voltinism. The speckled wood butterfly is univoltine in the northern part of its ... Read »


      Wikipedia
    • Worker policing

    • Worker policing is a behavior seen in colonies of social hymenopterans (ants, bees, and wasps) whereby worker females eat or remove eggs that have been laid by other workers rather than those laid by a queen. Worker policing ensures that the offspring of the queen will predominate in the group. In certain species of be ... Read »


      Wikipedia
    Wikipedia
  • What Else?

    • Reproduction

Extras