Q. Test cross is when
A) $F_{1}$ crossed with heterozygous parent
B) $F_{1}$ crossed with homozygous dominant parent
C) $F_{1}$ crossed with homozygous recessive parent
D) $F_{1}$ crossed with homozygous parent
Explanation
Test cross is the cross of $F_{1}$ with its recessive parent. It is used to observed that the $F_{1}$ is homozygous or heterozygous. It gives 1 : 1 ratio in monohybrid and 1 : 1 : 1 : 1 ratio in dihybrid cross.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.