Question

Diseases that are not selected for her usually the result of recessive or dominant phenotype's?

1) Recessive phenotype
2) Dominant phenotype
3)annot be determined
4) Not enough information provided

Answer 1

Diseases not selected for her are typically the result of recessive phenotypes. Autosomal recessive disorders like cystic fibrosis and sickle cell anemia occur when an individual inherits two recessive alleles, while carriers usually do not display symptoms.

Step-by-step explanation:

Autosomal recessive disorders like cystic fibrosis, sickle cell anemia, and Tay-Sachs disease manifest when an individual has two recessive alleles for the trait. Heterozygous individuals, who carry one recessive and one dominant allele, usually will not show symptoms of the recessive disease as their dominant allele compensates, making them carriers. This concept also explains why some alleles are dominant over others; only a small amount of the normal enzyme produced by a dominant allele can be enough to display the phenotype, which is why individuals heterozygous for such traits still exhibit the dominant phenotype.