The population will decrease or also have the mutation if its able to be passed on
Explanation:
because the deer is missing a toe it cannot run as fast, this means that it will most likely be killed. Because the deer was born with it it is a hereditary mutation. Which can be passed on. That means it's offspring will also have the mutation making the population fragile.
The soon to be male organism, developing from the zygote, receives or inherits the X chromosome from his mother. His father provides him the y chromosome, the smaller of the 2 sex chromosomes.