Choose the most influential contributing factor to the reduced sense of smell in humans compared with the other great apes.
A)pseudogenes
B)conservation of synteny
C)aneuploidy
D)one more chromosome in humans compared to the other great apes
E)number of olfactory receptor (OR)genes present in the genome

Question

Quizplus · Accepted Answer

Pseudogenes, which are non-functional copies of genes, have accumulated in the human olfactory receptor (OR) gene family compared to other great apes. These pseudogenes have arisen due to mutations and insertions/deletions, leading to a reduction in the number of functional OR genes in the human genome. This reduction in functional OR genes is the most influential factor contributing to the reduced sense of smell in humans compared to other great apes.

Choose the Most Influential Contributing Factor to the Reduced Sense