Genetic susceptibility to obesity is likely due to:
A) a common mutation in a single gene carried on the X chromosome.
B) multiple genes on multiple chromosomes.
C) the malfunction of the gene that controls insulin production.
D) the presence of an ob/ob gene pair, which results in the inability to produce leptin.

Question

Quizplus · Accepted Answer

While there may be some specific mutations that contribute to obesity in certain individuals or populations, overall genetic susceptibility to obesity is likely due to multiple genes on multiple chromosomes. Studies have identified hundreds of genetic variants that are associated with increased body mass index (BMI) and risk of obesity. This complex genetic architecture makes it difficult to identify a single "obesity gene" or mutation that explains all cases of obesity.

Genetic Susceptibility to Obesity Is Likely Due To