About 160 years. After Charles Darwin came out with his theory people have been debating it.
Androgenous behaviors is not solely the product of biological sexual
differences, such as the ability to bear children. It is also regarded as product of evolution
and natural selection where an individual may be androgynous, displaying feminine and
masculine characteristics or traits based on one’s gender identity and learned
gender role. This can be made possible through the ongoing social interactions
that individuals have with each other.
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Answer:
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.