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Anisogamy - an overview | ScienceDirect Topics
WEBAnisogamy, a reproductive system characterized by differentially-sized male and female gametes, has traditionally been invoked to explain sex differences in parental care and …
Egg cell - Wikipedia
The egg cell or ovum (pl.: ova) is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is not capable of movement (non-motile). If the male gamete (sperm) is capable of movement, the type of sexual reproduction is also classified as oogamous. A n…
Wikipedia · Text under CC-BY-SA license- Studies of Anisogamous wikipedia
Anisogamy - SpringerLink
WEBFeb 23, 2019 · When two sexually reproducing parents produce gametes of different size, it is termed as anisogamy, and the organism is anisogamous. The sexes of parents are …
Reproduction - Wikipedia
WEBMost organisms form two different types of gametes. In these anisogamous species, the two sexes are referred to as male (producing sperm or microspores) and female …
Parthenogenesis and the Evolution of Anisogamy - PMC
WEBSep 18, 2021 · Abstract. Recently, it was pointed out that classic models for the evolution of anisogamy do not take into account the possibility of parthenogenetic reproduction, even …
Hermaphroditic origins of anisogamy | Philosophical Transactions …
WEBMar 20, 2023 · Anisogamy—the size dimorphism of gametes—is the defining difference between the male and female sexual strategies. Game-theoretic thinking led to the first …
1 - The origin and maintenance of two sexes (anisogamy), and …
WEBA sex is thus an adult phenotype defined in terms of the size of (haploid) gamete it produces: in an anisogamous population, males produce microgametes and females …
The evolution of anisogamy: a game-theoretic approach
WEBNov 22, 2002 · Contact, not conflict, causes the evolution of anisogamy. The origin and maintenance of two sexes (anisogamy), and their gamete sizes by gamete competition. …
Anisogamy - Wikiwand
WEBAnisogamy is a form of sexual reproduction that involves the union or fusion of two gametes that differ in size and/or form. The smaller gamete is male, a sperm cell, …
Why are sperm so small? Or, how did anisogamy evolve?
WEBNov 5, 2020 · The term anisogamy describes the phenomenon of two dramatically different gamete sizes in a sexually reproducing species. When individuals reproduce sexually …
The Evolution of Anisogamy: More Questions than Answers
WEBNov 29, 2012 · Twelve of these questions are briefly reviewed here— (1) the distinction between sex and sexual types; (2) the distinction between mating types and anisogamy; …
Evolution of Anisogamy in Organisms with Parthenogenetic …
WEBThe evolution of anisogamy is of fundamental importance in evolutionary biology: it creates the male and female sexes and underlies the phenomena of sexual selection and sexual …
Isogamy - Wikipedia
WEBIsogamy. Different forms of isogamy: A) isogamy of motile cells, B) isogamy of non-motile cells, C) conjugation. Isogamy is a form of sexual reproduction that involves gametes of …
Anisogamy explains why males benefit more from additional matings
WEBJul 6, 2022 · In contrast, anisogamy means that males always produce at least some gametes in excess, and thus can benefit from seeking additional mates. When …
Anisogamy evolved with a reduced sex-determining region in …
WEBMar 8, 2018 · Here we focus on two closely related volvocine genera that bracket this transition—isogamous Yamagishiella and anisogamous Eudorina.
How did anis... - i think posi... | Learn Science at Scitable - Nature
WEBAnisogamy describes a form of sexual reproduction wherein males and females produce sex cells, or gametes, of different sizes. Males produce small gametes called sperm …
A dynamical model for the origin of anisogamy - PubMed
WEBJul 21, 2021 · The vast majority of multi-cellular organisms are anisogamous, meaning that male and female sex cells differ in size. It remains an open question how this …
Egg cell - Wikiwand
WEBThe egg cell or ovum (pl.: ova) is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female …
Oogamy - Wikipedia
WEBOogamy in animals: small, motile sperm on the surface of an ovum. Oogamy is a form of anisogamy where the gametes differ in both size and form. In oogamy the large female …
Degree of anisogamy is unrelated to the intensity of sexual
WEBSep 30, 2021 · The Darwin–Bateman paradigm argues that the root of these differences is anisogamy (i.e., differences in size and/or function of gametes between the sexes) that …
The evolution of anisogamy: The adaptive significance of …
WEBJan 7, 2006 · Classic theory on the evolution of anisogamy focuses on the trade-off between gamete productivity and provisioning and mechanisms associated with post-zygotic …
WEBAnisogamy is a mating system in which gamete size varies between sexes (Bell 1978). The ubiquity of anisogamy across eukaryotes has motivated numerous theoretical and …
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