AP BIOLOGY

Detailed explanation-1: -Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

Detailed explanation-2: -Allele refers to variants of the same gene that occur on the same chromosome. An allele is said to be dominant as they override or mask the effect of other variants available for the same gene. If both the alleles are the same, they are said to be homozygous and the character is expressed.

Detailed explanation-3: -Dominant alleles are seen as an uppercase of a letter; for example, B. Recessive alleles are seen as a lower case of a letter; b.

Detailed explanation-4: -Whether an allele is dominant or not does not affect how common a trait is. Now of course traits can become more common over time. The changes just don’t have anything to do with whether the trait is dominant or not.