The embryos of a fish, chicken and rabbit all contain a tail and pharyngeal pouches at some point during their early development. although the fetus of all these species looks different from one another, the similiarity between these organisms during their embryological development suggests an evolutionary relationship among all species. a) avian b) invertebrate c) mammalian d) vertebrate

The correct answer is option D which is vertebrate.

c

explanation:

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.