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Hello, I am pleased to be giving the greetings, I have just created my account to start topics on biology and nature, as well as an animal world that fascinates my insects, the parasites and their larvae. Form of parenting is exciting leave a message here on my page to be answered here I leave...

--- There are species with only females, but it's impossible for there to be only males. *1. Why?* The egg carries everything to make an embryo: DNA + nutrients + mitochondria. It can develop alone = parthenogenesis. Sperm only carries DNA. Without an egg, nothing starts. That's why there...