Q. The recessive genes located on X-chromosome in humans are always
A) Lethal
B) Sub-lethal
C) Expressed in males
D) Expressed in females
Explanation
The recessive genes located on X-chromosome in humans are always expressed in males because a female may be homozygous or heterozygous, while male is always hemizygous (i.e., only one allele is present).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.