Generation 1 Generation 2 Generation 3 Generation 4

The diagram above represents an evolutionary path for a population of organisms. Each successive generation is indicated by number, with the oldest generation being Generation 1 and the youngest generations being Generation 4.

Which of the following pairs of generations likely have the most genetic differences between them?
A.
Generations 1 and 3
B.
Generations 2 and 4
C.
Generations 2 and 3
D.
Generations 1 and 4

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

i don't know. if i were you, i would search it up online : d

the answer is d.) homologous; have mammary glands