Question

In human, right handedness is dominant over left handedness. What offsprings would be expected from two left handed parents?

• A. Only left handed
• B. Only right handed
• C. Left handed and right handed both
• D. Neither left handed nor right handed

Answer 1

The correct option is A Only left handed

According to the question, right handedness (R) is dominant over left handedness (r), hence, the left handed parents will have homozygous recessive genotype (rr). Since, both parents will produce only one type of gamete with "r" allele, all the children will be left handed (rr). Option A is the correct answer.