Question:
Given below are two statements:
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below.
Given below are two statements:
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below.
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below.
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Remember:
Back cross = $F_1$ $\times$ parent
Test cross = $F_1$ $\times$ recessive parent (special case)
Test cross = $F_1$ $\times$ recessive parent (special case)
Updated On: May 8, 2026
- Both statement I and statement II are correct.
- Both statement I and statement II are incorrect.
- Statement I is correct and statement II is incorrect.
- Statement I is incorrect and statement II is correct.
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Concept: In genetics, back cross and test cross are important types of crosses used to analyze inheritance patterns.
• Back cross: Crossing of $F_1$ hybrid with either of its parents (dominant or recessive).
• Test cross: A special type of back cross where $F_1$ hybrid is crossed with a homozygous recessive parent.
Step 1: Analyze Statement I.
Back cross is defined as crossing of $F_1$ hybrid with one of its parents. This matches the standard definition. Hence, Statement I is correct.
Step 2: Analyze Statement II.
Test cross specifically involves crossing with a homozygous recessive parent to determine genotype. Hence, Statement II is correct.
Step 3: Understand relationship.
All test crosses are back crosses, but not all back crosses are test crosses.
Step 4: Conclusion.
Both statements are correct. Final Answer: Option (A)
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