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Mendel used true-breeding strains of peas. Which true-breeding strain of peas would have been easier to produce: peas with the trait caused by a dominant allele or a recessive allele?

A. Dominant allele
B. Both strains would be equally easy to produce
C. Recessive allele

Answer :

Final answer:

It would have been easier for Mendel to produce true-breeding peas with a trait caused by a dominant allele than with a recessive allele, due to the dominant allele's ability to mask the presence of the recessive allele, simplifying the breeding process.

Explanation:

Producing true-breeding peas with a trait caused by a dominant allele would have been easier than producing true-breeding peas with a trait caused by a recessive allele. This is because the dominant allele can mask the presence of the recessive allele. Therefore, when Mendel performed his experiments, the pea plants that were homozygous dominant for a trait would consistently show the dominant phenotype even in the presence of recessive alleles in a heterozygous state, making it simpler to establish and maintain true-breeding dominant strains.

However, with homozygous recessive pea plants, both parents need to possess and pass on the recessive allele for the offspring to display the recessive trait. Since the recessive phenotype is only expressed when there are two copies of the recessive allele, it requires more selective breeding effort to ensure that no dominant alleles are present. Therefore, true-breeding strains for recessive traits take more effort to produce and maintain.

Overall, Mendel had to ensure a more controlled and careful breeding process to produce true-breeding strains of the recessive phenotypes compared to the dominant ones. His work with garden peas, which were highly inbred and produced offspring that looked like the parent, made his experiments more consistent and reliable.

Mendel used true-breeding pea plants in his experiments, and it was easier for him to produce true-breeding peas with a trait caused by a recessive allele.

Mendel used true-breeding pea plants in his experiments. These plants always produce offspring with the same phenotype. When selecting the true-breeding strains of peas for his experiments, it would have been easier for Mendel to produce true-breeding peas with the trait caused by a recessive allele.

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