There was selective pressure to obscure the fertile period. And therein lies the puzzle If sex is such an inefficient way to reproduce, why is it so widespread Sex almost certainly originated nearly 3.5 billion years ago as a mechanism for repairing the. We're still living with the consequences Sexual reproduction is the preferred method.
In many ways, asexual reproduction is a better evolutionary strategy Only one parent is required, and all of that parent's genes are passed. For the people arguing that sex isn’t solely used for procreation, and is used for bonding or creating/expressing intimacy between people, this is almost expressly for reproduction. Do humans have a natural instinct to reproduce Humans, like all creatures, have urges which lead to reproduction Our biological urge is to have sex, not to make babies
The urge is to store food, trees are a natural result.
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