Which of the Following Statements Correctly Describes How Mendel Accounted

Multiple Choice

Which of the following statements correctly describes how Mendel accounted for the observation that traits had disappeared in the F₁ generation and then reappeared in the F₂ generation?

A) New mutations were frequently generated in the F₂ progeny, causing traits that had been lost in the F₁ to reappear in the F₂.
B) The mechanism controlling the appearance of traits was different between the F₁ and the F₂ plants.
C) Traits can be dominant or recessive, and the recessive traits were "hidden" by the dominant ones in the F₁.
D) Members of the F₁ generation had only one allele for each trait, but members of the F₂ had two alleles for each trait.