Answer:
red blood cells (RBCs) misfolding and convert in sickle shapevfrom the donut with out hole shape.
Thrifty metabolism
Thrifty metabolism is the genetic
tendency toward efficient use of energy that results in below-average energy
requirements and increased storage of calories as fat. Thrifty metabolism
contributes to less weight lost when an obese person reduce the amount of his
calorie intake even though there is changes in metabolism.
Parkinson's disease
<span>Parkinson's disease results from deterioration of brain's nerve cells</span>
There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA.
