In Mendel's monohybrid cross, all first-generation plants appeared tall. What is the most correct conclusion?
Answer and explanation
Correct answer: The tall trait is dominant over the dwarf trait.
In Mendel’s monohybrid cross, a pure tall plant is crossed with a pure dwarf plant. The first-generation offspring receive one allele for each form of the trait, but only the tall phenotype is visible. This shows that the tall allele masks the dwarf allele and is dominant. The dwarf allele is not destroyed; it remains present in the hybrid genotype. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
The tall trait is dominant over the dwarf trait.
Why is this the correct answer?
In Mendel’s monohybrid cross, a pure tall plant is crossed with a pure dwarf plant. The first-generation offspring receive one allele for each form of the trait, but only the tall phenotype is visible. This shows that the tall allele masks the dwarf allele and is dominant. The dwarf allele is not destroyed; it remains present in the hybrid genotype. Therefore option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Mendel’s laws.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
