Major morphological changes can result from
A) mutations in developmental regulatory genes.
B) short-term environmental changes.
C) long-term genetic recombination.
D) alterations in the time or place of expression of genes.
E) Both a and d

Question

Quizplus · Accepted Answer

Both mutations in developmental regulatory genes (choice A) and alterations in the time or place of expression of genes (choice D) can result in major morphological changes. These changes can affect the development and growth of an organism, resulting in differences in physical traits. Short-term environmental changes (choice B) and long-term genetic recombination (choice C) may also have some impact on morphological changes, but are not as significant as mutations and alterations in gene expression.

Major Morphological Changes Can Result from