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  2. Polygyny in animals - Wikipedia

    en.wikipedia.org/wiki/Polygyny_in_Animals

    Polygyny (/ pəˈlɪdʒɪni /; from Neo-Greek πολυγυνία, from πολύ- (polú-) 'many' and γυνή (gunḗ) 'woman, wife') [1] is a mating system in which one male lives and mates with multiple females but each female only mates with a few males. Systems where several females mate with several males are defined either as promiscuity ...

  3. Polygamy - Wikipedia

    en.wikipedia.org/wiki/Polygamy

    v. t. e. Polygamy (from Late Greek πολυγαμία polygamía, "state of marriage to many spouses") [1][2][3][4] is the practice of marrying multiple spouses. When a man is married to more than one wife at the same time, it is called polygyny. When a woman is married to more than one husband at the same time, it is called polyandry.

  4. Mating system - Wikipedia

    en.wikipedia.org/wiki/Mating_system

    Mating system. A mating system is a way in which a group is structured in relation to sexual behaviour. The precise meaning depends upon the context. With respect to animals, the term describes which males and females mate under which circumstances.

  5. Polygynandry - Wikipedia

    en.wikipedia.org/wiki/Polygynandry

    Polygynandry. Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season. [1] In sexually reproducing diploid animals, different mating strategies are employed by males and females, because the cost of gamete production is lower for males than it is for females. [2]

  6. Animal sexual behaviour - Wikipedia

    en.wikipedia.org/wiki/Animal_sexual_behaviour

    Female and male sexual behaviour differ in many species. Often, males are more active in initiating mating, and bear the more conspicuous sexual ornamentation like antlers and colourful plumage. This is a result of anisogamy, where sperm are smaller and much less costly (energetically) to produce than eggs.

  7. Biological roles of the elements - Wikipedia

    en.wikipedia.org/wiki/Biological_roles_of_the...

    Biological roles of the elements. A large fraction of the chemical elements that occur naturally on the Earth's surface are essential to the structure and metabolism of living things. Four of these elements (hydrogen, carbon, nitrogen, and oxygen) are essential to every living thing and collectively make up 99% of the mass of protoplasm. [1]

  8. Glossary of biology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_biology

    This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...

  9. Polygyny - Wikipedia

    en.wikipedia.org/wiki/Polygyny

    Rua Kenana and four of his wives. Polygyny (/ pəˈlɪdʒɪni /) is a form of polygamy entailing the marriage of a man to several women. The term polygyny is from Neoclassical Greek πολυγυνία (polugunía); from Ancient Greek πολύ (polú) 'many' and γυνή (gunḗ) 'woman, wife'.