Question

in a certain species of insect, eye color is controlled by a single gene. the dominant allele (e) codes for black eyes, while the recessive allele (e) codes for red eyes. how could two parents with black eyes have a red - eyed female offspring? a since the offspring is heterozygous for eye color, environmental factors are causing it to produce more red pigment than black, and thus has red eyes. b the parents are homozygous recessive for eye color, so all of their offspring will inherit red eyes. c since the offspring is female, it did not inherit any y chromosomes with the gene for black eyes, and thus has red eyes. d the parents are heterozygous for eye color, so their offspring must inherit the recessive allele from both parents.

Explanation:

Para que dos padres con ojos negros (genotipo \( Ee \) si son heterocigotos) tengan una descendencia con ojos rojos (genotipo \( ee \)), deben transmitir cada uno el alelo recesivo \( e \). Esto significa que los padres son heterocigotos (\( Ee \times Ee \)), y la descendencia \( ee \) (ojos rojos) hereda el alelo recesivo de ambos padres.

Answer:

D. The parents are heterozygous for eye color, so their offspring must inherit the recessive allele from both parents.