Question

The distribution of the height of humans is a normal distribution. There are some very tall people and some very short people, but most people are in the middle. What is most likely true about this trait?

A. Being tall is a dominant trait.
B. There are only two alleles for height.
C. It is a Mendelian trait.
D. It is controlled by several different genes.

Answer 1

Based on the given results of varying height of people which is considered normal, this would mean that this is controlled by several different genes. There are some who are really short, and some are really tall, but most of them fall in the middle or say normal range. Answer for this would be option D.

Answer 2

Correct answer choice is :

D) It is controlled by several different genes.

Explanation:

Measure the heights of a large unit of adult men and the numbers will follow a standard distribution. But height is not a simple property. There are various genetic and environmental determinants that affect height. The Cheyenne people of North America were among the tallest in the world, with a medium male height of about 5 feet 10 inches. Steckel puts this down to the availability of protein in the form of buffalo.