Sexual Development of the Embryo
Dependent upon whether the one of the 46 chromosomes of the human is an X or a Y, will determine the sex of the developing fetus.
Dependent upon whether the one of the 46 chromosomes of the human is an X or a Y, will determine the sex of the developing fetus.
Homosexual behavior in nature, surely not? As our own cultural attitudes towards gay people relax scientists are increasingly more comfortable with revealing their findings that Mother Nature is pretty cool with it too. Here are ten animals that do the ‘wild thing’ with members of the same sex.
A short text on Evolutionary Psychology.
The difference between being brought up in an all geese, all human, or geese and human environment.
Did you know that animals and insects have more than one spouse?
Mating is the most fundamental and vital process for animals to select for their best partners. In the view of biology, mating refers to the pairing of opposite-sex for copulation (the union of the sex organs of two sexually reproducing animals for insemination and subsequent internal fertilization) in social animal to breed for their offspring.