Identify the best way to determine if two organisms are closely related.

a) comparing body plans

b) molecular homology (comparing dna)

c) identifying and comparing homologous structures

d) comparative embryology (comparing embryonic development)

The correct answer is -

B) molecular homology (comparing DNA).

DNA (deoxyribonucleic acid) is considered as the genetic material of living organisms, which is passed from one generation to the next generation that is from parents to their offspring.

By comparing the DNA sequence of two organisms (molecular homology), we can determine whether they are closely related or not.

If two organisms share genetic relatedness that is similarity in their DNA sequence, they are considered to be closely related.

Thus, option B) is the right answer.

brown

explanation:

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.