Mortal combat is an effective but risky way of eliminating rivals. The second is that when several females in a pride give birth simultaneously, the cubs are disproportionately male. Carousel Previous Carousel Next. Is this true, and if 80, what can I do to make my sperm more attractive?
In accordance with this observation, he also found that while males had more children the more partners they mated with, females did not. It's a good book for people who are simply into animals to people who actually study them.
Thank you for your feedback. You bet. And Caesar thought he had problems. It works well as a coffee table book and makes a good present to a biologist enthusiast.
If you watch through the generations, you'll witness a mighty evolutionary battle. Giant water bugs are type IT sex maniacs, the male hogging the female to make sure no other man gets his hook in. It isn't very big, and some of the exespots are wonky.
Usually, male honeybees hatch from unfertilized eggs, females from fertilized eggs. However, some do—and then, yes, eating figs means eating dead wasps.
Your lover is a classic type I. All the males I know are pochos. Meanwhile, the moth Olceclostera seraphica has genitals that resemble a musical instrument: the male rubs one part of his privates against another, producing vibrations with which to thrill his mate.
In the beetle Callosobruchus maculatus, for example, whether or not a male is successful in sperm competition depends in part on the genes of his mate, And certainly, genetic incompatibility is an important cause of infertility in a number of species.
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