Q. When the chromosome number of a given organism has one additional chromosome in one of the homologous pairs, the addition is known as
A) Trisomy
B) Monosomy
C) Polyploidy
D) nullisomy
Explanation
Trisomy : An individual having one extra chromosome of a set (2n + 1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.