A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the following genes is absolutely conserved, which of the following would be the best choice on which to base the phylogeny?

A) genes involved in chitin synthesis

B) collagen genes

C) β-catenin genes

D) genes involved in eye-lens synthesis

The correct answer is:

B) collagen genes

Option (B) is the correct answer of the following question.

Explanation:

Collagens are a family of enzymes that perpetuate and protect many of the body's tissues, with the exception of connective tissue, femur, fibula, pigmentation, and the caucasian eye (optic disc). It would be the best choice on which to base the phylogeny.

The first and most concentrated substance in the body is the collagen genes. It is a large, indigestible cellular muscle which maintains organisms and gives internal cells a texture. Collagen is also an essential part of the crisscrossing membrane neurons.

Other options are incorrect because they are not related to the given scenario.