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These animals are not hermaphrodites, like some worms, but literally change sex. For instance, some species of lizards reproduce only by parthenogenesis-that is, their unfertilized eggs grow into adults, and these species no longer have males.
Sometimes the external temperature determines the sex of an animal during its early development.
In other organisms, such as bees and wasps, in which females develop from fertilized eggs and males develop from unfertilized eggs, distribution of the sexes is unequal.
Clinging to rocks and to each other, they form piles. If another limpet attaches itself on top of the male limpet, the newcomer becomes male, and the male limpet beneath it reverts to being female.Zazwyczaj są one wyszukiwania, które Google oferuje do osoby, która jest wyrejestrowany pierwsze 10 wyników, a teraz decyduje, czy iść do następnej strony, lub skorygować zapytania związane.Strona zawiera ogłoszenia towarzyskie i seks anonse których dodawanie jest bezpłatne.These slipper limpets show the evolutionarily advanced feature of internal fertilization, and the male on top extends his reproductive organ down the pile of females below him to fertilize their eggs.For some fish, the number of males in the population determines the sex of the fish.
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