During sexual reproduction, gametes combine to form a zygote with the entire genetic code for the species. The zygote receives a full genetic code because -

Responses

meiosis in the sex organs produce gametes that each contain 50% of the genetic code.
meiosis in the sex organs produce gametes that each contain 50% of the genetic code.,

the rate of digestion influences fertility.
the rate of digestion influences fertility. ,

the production of gametes is regulated by neurons.
the production of gametes is regulated by neurons.,

mitosis in cells is regulated by the nervous system.

meiosis in the sex organs produce gametes that each contain 50% of the genetic code.