AP BIOLOGY

Detailed explanation-1: -Eye colour The allele for brown eyes (B) is dominant over the allele for blue eyes (b). So, if you have one allele for brown eyes and one allele for blue eyes (Bb), your eyes will be brown.

Detailed explanation-2: -Of these three genotypes, only bb, the homozygous recessive genotype, will produce a phenotype of blue eyes. The heterozygous genotype and the homozygous dominant genotype both will produce brown eyes, though only the heterozygous genotype can pass on the gene for blue eyes.

Detailed explanation-3: -– Alleles for the same trait must be in separate sex cells. individuals. – Father has Brown eyes and is heterozygous (Bb). – Mother has Brown eyes and is heterozygous (Bb).

Detailed explanation-4: -The heterozygous parent must have two different genes, and at least one for the dominant brown eyes (B). These parents must have the genotypes of (bb) and (Bb). There is a 50% chance of an offspring having a (Bb) genotype, and thus brown eyes.