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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
When a cross is done between an offspring and it's parent, it is known as:
  • A
    Monohybrid cross
  • B
    Dihybrid cross
  • ✓
    Back cross
  • D
    Reciprocal cross
✓

Answer

Correct option: C.
Back cross
Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, in order to achieve offspring with a genetic identity which is closer to that of the parent.This method has long been used in horticulture$, e.g.$ to incorporate desirable traits to the elite line of crops. At present, the deliberate back crossing is carried out to breed and produce gene knockouts used in Genetics research.

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