The esophagus squeezes food down the digestive tract by an involuntary synchronized muscle movement called the Peristalsis
The genotype is the set of genes in our DNA which is responsible for a particular trait. Thephenotype is the physical expression, or characteristics, of that trait. For example, two organisms that have even the minutest difference in their genes are said to have different genotypes.
Well sickle cell disease requires two homozygous recessive alleles so you would have the disease but if your'e heterozygous you have the sickle cell trait.
The energy and speed both increase
