Sickle cell disease is a genetic disorder that gives red blood cells a crescent shape instead of the typical disk shape. this genetic disease is recessive. if two individuals who have one recessive gene have four children, what percentage of the children will show symptoms of sickle cell disease?

25 percent
100 percent
50 percent
75 percent

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

The function of the excretory system is to control homeostasis and

What is the key to the recognition of codominance?