Question

The structural differences between a tadpole and an adult frog are due to the -

A- availability of food sources at different stages.
B- type of DNA present at each developmental stage.
C- combination of genetic material inherited during fertilization.
D- different sets of genes expressed at each stage of development.

Answer 1

Answer: D. different sets of genes expressed at each stage of development

Explanation: The structural differences between a tadpole and an adult frog are due to the different sets of genes expressed at each stage of development.