Does a horse and dolphin have the most shared derived characteristics?

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

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 .

How does the nervous system affect the excretory system?