AP BIOLOGY

Detailed explanation-1: -Recessive, as related to genetics, refers to the relationship between an observed trait and the two inherited versions of a gene related to that trait. Individuals inherit two versions of each gene, known as alleles, from each parent.

Detailed explanation-2: -When a person inherits a recessive gene that is not expressed in the phenotype, that person is a carrier of the gene. Heritability indicates how much of the variation of a trait can be traced to genes. Genes and alleles for alcoholism have been found exclusively on the Y chromosome.

Detailed explanation-3: -2, Dominant ones are always expressed in the organism when they are present 3. Recessive ones are only expressed when the dominant one is not present.

Detailed explanation-4: -Recessive alleles are only expressed when no dominant allele is present. In most sexually reproducing organisms, each individual has two alleles for each gene (one from each parent). This pair of alleles is called a genotype and determines the organism’s appearance, or phenotype.