Question

Two genes that are paralogs: 1) arose from gene duplication 2) are found in the same genome 3) may perform the same or different functions 4) all of the above 5) none of the above?

1) 1) arose from gene duplication
2) 2) are found in the same genome
3) 3) may perform the same or different functions
4) 4) all of the above
5) 5) none of the above

Answer 1

Paralogs are genes that arose from gene duplication, are found in the same genome, and may have similar or new functions, thus encompassing all of the above options.

Step-by-step explanation:

Two genes that are paralogs meet all the provided options. Paralogs indeed arose from gene duplication, which is a type of mutation where an entire gene is duplicated in the genome. This process provides the means for one copy to undergo mutation, selection, and genetic drift while the other continues to produce its functional protein. Consequently, one gene can maintain its original function while its duplicate may evolve and acquire new functions. This evolutionary mechanism allows organisms to develop complexity and adaptability without losing vital functions provided by the existing genes.