All of the following are purposes of committees except : a. committees to ease the work load within congress b. committees serve as the eyes and ears of the president when a bill is being approved c.committees allow lawmakers to listen to supporters and opponents of bills d. committees the public to learn about key problems and issues that face the nation

Answer;

Polygenic trait

Explanation;

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect.

-Normally, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. Other examples of poilygenic trait include; weight, skin color, and eye color.