منابع مشابه
Sexual selection
Sexual selection is a concept that has probably been misunderstood and misrepresented more than any other idea in evolutionary biology, confusion that continues to the present day. We are not entirely sure why this is, but sexual politics seems to have played its role, as does a failure to understand what sexual selection is and why it was initially invoked. While in some ways less intuitive th...
متن کاملSexual selection
The reproductive biology of social Hymenoptera is characterized by lifelong sperm storage by queens and sperm limitation in males. Both sexes are therefore expected to be especially choosy about their mating partners. In particular, sexuals should avoid sib-mating because of the resulting risk of producing sterile diploid male offspring. Colonies of the ant Leptothorax gredleri are specialists ...
متن کاملEvolution: Radiotracking Sexual Selection
Why are members of one sex bigger than those of the other? A new study in which male giant weta were radiotracked found that smaller, longer legged males win the race to inseminate females.
متن کاملSexual Selection: Roles Evolving
In a role-reversed beetle, in which sexual selection acts primarily on females, females evolved to more rapidly court and copulate after many generations of experimentally increased female sexual competition.
متن کاملSexual selection in fungi.
The significance of sexual selection, the component of natural selection associated with variation in mating success, is well established for the evolution of animals and plants, but not for the evolution of fungi. Even though fungi do not have separate sexes, most filamentous fungi mate in a hermaphroditic fashion, with distinct sex roles, that is, investment in large gametes (female role) and...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2011
ISSN: 0960-9822
DOI: 10.1016/j.cub.2010.11.053