In a Cross Between Pure-Breeding Tall Plants with Pure-Breeding Short

question 45

Multiple Choice

In a cross between pure-breeding tall plants with pure-breeding short plants performed by Mendel, all of the F₁ are tall. When these plants are allowed to fertilize themselves, the F₂ plants occur in a ratio of 3 tall to 1 short. Which of the following is NOT a valid conclusion from these results?

• A) The allele that produces the tall condition is dominant to the allele that produces the short condition.
• B) The difference between tall and short stature in these lines is controlled by a single gene pair.
• C) During production of gametes in F₁ plants, the tall and short alleles segregate from each other equally into the gametes.
• D) The tall and short traits assort independently of each other in this cross.
• E) Fertilization occurs randomly between gametes carrying the tall and short alleles.

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