I'm pretty sure the answer is A.
Look up traffic rules on whatever state you live in and it will tell you everything :) not much of an answer but thats all i have <3
Answer:
if crossing over does not occur, the products are parental gametes. If crossing over occurs, the products are recombinant gametes. Meaning they are mixed.
Explanation:
If crossing over doesn't occurs then you wouldn't really mix the 2 parental alleles so you couldn't have a genotype without mixing.
Sorry if im wrong!
Answer:
A a(birth rate+immigration)-(death rate)