Question

if two white sheep produce a black offspring , the parent's genotype for color must be ..... ??

Answer 1

Answer:

Heterozygous is the correct answer

Answer 2

The parent's Genotype is Heterozygous.

• Two white sheep producing a black offspring implies that white color is translated due to the presence of a dominant allele.
• Black color is translated due to presence of both the recessive alleles in the offspring.
• Homozygous recessive genotype in the offspring is possible only when both the parents have heterozygous genotype i.e. presence of 1 dominant and 1 recessive allele.
• i.e. Ww × Ww
• can produce ww (homozygous recessive) offspring
• As an offspring receives 1 allele from the mother and the other from the father for the particular trait. Hence both the parents should have at-least 1 recessive allele.