Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
Hope this helps
Answer:
Ear Damage this would affect the individuals hearing aid there by making it difficult to hear clearly
Nutrients enter a cell up the concentration gradient by the process of active transport.
