Question:
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?
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When a homozygous dominant (VV) is crossed with a homozygous recessive (vv), all offspring will be heterozygous (Vv) and express the dominant trait.
Updated On: Mar 29, 2026
- 25%
- 50%
- 75%
- 100%
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the genetic cross.
In this question, we are dealing with a cross between two plants with genotypes "VV" (homozygous violet) and "vv" (homozygous white).
Step 2: Punnett square analysis.
The cross between "VV" and "vv" will produce all heterozygous "Vv" offspring, since each parent contributes one allele. The "V" allele (violet) is dominant, so all offspring will have violet flowers.
Step 3: Conclusion.
Thus, 100% of the offspring from the cross "VV × vv" will have violet flowers.
Final Answer: 100%.
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