The male deer fight for mates and the winner of the fights gets to breed with said females, the larger the antlers the more likely they will win also, the males that are strong are the ones the females want to breed with because their offspring have a bigger chance of survival.
Answer:
For those whose identity is similar/the same, their gender identity corresponds with their birth sex.
Explanation:
If the environment is radioactive it can.
Example of radioactive genetic mutation ^^
Also if the environment has been polluted it can too.
Example of pollution genetic mutation would be a frog born with extra legs from living in a polluted pond
Http://lsintspl3.wgbh.org/en-us/lesson/nved-il-evolab-m4/2