(need help now its due in 10 minutes!)
How does gene duplication allow new genes to develop over many generations? Select two answer choices.
A. If the original gene becomes non-functional because of a mutation, it will be selected against, and could be deleted because it accumulates further mutations over time to eventually become a non-functional gene.
B. If the duplicated gene becomes non-functional because of a mutation, it will not be selected against and could accumulate further mutations over time to eventually become a gene with new functions.
C. In organisms with duplicated genes, the original gene and function is deleted while allowing mutations to occur in the duplicated gene that can lead to new variations.
D. In organisms with duplicated genes, the original gene and function is maintained while allowing mutations to occur in the duplicated gene that can lead to new variations.

question 2:Which is the most likely way that Hox genes account for these variations?
A. As vertebrates evolved, mutations in Hox genes led to new vertebral organization during embryological development.
B. As vertebrates evolved, mutations in Hox genes directly resulted in new proteins that determined vertebrae.
C. Long before vertebrates evolved, a wide variety of Hox genes developed, and many coded for vertebral structures.
D. Environmental factors, which differ among vertebrate groups, activate specific Hox genes that code for specific structures.

question 3:Which is the most likely result if the Ubx gene was activated either before or after it normally is activated in the sequence of Hox gene expression?
A. The insect develops slightly shorter or longer abdominal legs.
B. The insect develops normal body parts at either a slower or more rapid rate.
C. The insect develops normal body parts but in an altered time sequence.
D. The insect develops legs in other parts of its body.