Question

A cross between hybrid and its parent is
A. Back cross
B. Reciprocal cross
C. Monohybrid cross
D. Dihybrid cross

Answer 1

Hint: Hybrid is a cross between two plants of different species or varieties which give a heterozygous offspring. This offspring has the characters and traits from both the parents and is used to get better characteristics from both the parents.

Complete answer:
Back cross: Back cross is the cross between the F1 progeny and one of the parents. This cross helps us to understand about the dominant and recessive traits or alleles in the offspring.
Reciprocal cross: It is the type of cross in which a plant acts as a male parent but acts as a female parent in another cross which is the same as a female plant. This type of cross in which one plant can act as both male and female plant is called reciprocal cross.
Monohybrid cross: It is the type of cross in which homozygous dominant parent is crossed to another homozygous recessive parent on the basis of one trait or character. This cross determines the Law of dominance and Law of segregation which was discovered by Mandel.
Dihybrid cross: This is a cross between a homozygous recessive parent with the another homozygous dominant parent on the basis of two characters. This cross determines the Law of Independent assortment which is postulated by Mendel.

Hence, the correct option is A. Back cross.

Note: The various crosses which are practiced are done to obtain a desired offspring with the required traits and characters. This cross helps to study the genetics and Mendel’s laws of inheritance which can be used in modern science.