Ignore the one that’s selected i accidentally clicked on it but please help!!

Classify the structures as homologous or analogous, depending on their structure and function.

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

Which are reasons cells undergo cell division?