Question

In which type of inheritance the results are affected by reciprocal cross?

• A. Nuclear
• B. Cytoplasmic
• C. Blending
• D. All of the above

Answer 1

Answer: (B)

Cytoplasmic

Cytoplasmic inheritance is defined as the inheritance of characteristics of only one of the two parents, usually the female parent to the progeny.
In genetics, a reciprocal cross is a breeding experiment designed to test the role of parental sex on a given inheritance pattern. All parent organisms must be true breeding to properly carry out such an experiment. In one cross, a male expressing the trait of interest will be crossed with a female not expressing the trait. In the other, a female expressing the trait of interest will be crossed with a male not expressing the trait.
If some genetical information is also carried in the cytoplasm, the unequal contribution of cytoplasm to the zygote by the two gametes should provide a way of detecting it. The technique used for this is reciprocal cross.
Thus, cytoplasmic inheritance results are affected by reciprocal cross.