Multiple Choice
Which of the following breeding methods is most closely associated with Mendel's principles and is commonly used in the cattle industry to maintain desirable traits?
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2. Mendel's Laws of Inheritance
Mendel's Experiments and Laws
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Which of the following genotypes could represent true-breeding plants in Mendel's pea plant experiments?
A
Aa
B
aa
C
AA
Verified step by step guidance1
Understand that a true-breeding plant is homozygous for a particular trait, meaning it has two identical alleles for that gene.
Recall that heterozygous genotypes (like Aa) have two different alleles and therefore are not true-breeding because they can produce offspring with different genotypes.
Identify that homozygous dominant (AA) and homozygous recessive (aa) genotypes have identical alleles and will consistently pass the same allele to their offspring, making them true-breeding.
Conclude that the genotypes AA and aa represent true-breeding plants, while Aa does not.
Summarize that true-breeding plants are always homozygous, either dominant (AA) or recessive (aa), ensuring uniform offspring.
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