Answer:
More recent phylogenetic analyses, based on mitochondrial DNA, have suggested that the crocodile shark is closely related to either the megamouth shark or the sand sharks (Odontaspididae).
1) C
A population has to be isolated for speciation
2) D
Different species are incapable of reproducing with one another
3) D
When a population is contained, the recessive alleles can become dominant within the population
I believe the answer is:
Gastroenterology
I hope this answer was helpful!! :)
The answer would be cyclins hope it helps<span> </span>
