Which of the following statements best explains how gene duplication events, such as those seen in the Hox gene complex, may have allowed the evolution of new morphological forms?
A) There are more copies of genes, meaning speciation had occurred by polyploidy.
B) The original gene copy is the outgroup, and the new gene copies are the adaptive radiation.
C) Without duplicated genes, species would be vulnerable to extinction.
D) One copy of a gene can perform the original function, while other copies are available to take on new functions.

Question

Quizplus · Accepted Answer

Gene duplication events provide a mechanism for evolutionary innovation. When a gene is duplicated, one copy can continue to perform its original function, ensuring the organism's viability, while the other copies are free to accumulate mutations. These mutations can lead to new gene functions, potentially giving rise to new morphological features and contributing to the diversity of life. This process allows organisms to adapt to new environments or to exploit new ecological niches, driving evolutionary change.

Which of the Following Statements Best Explains How Gene Duplication