Mendel accounted for the observation that traits which had disappeared in the F1 generation reappeared in the F2 generation by proposing that
A) new mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1.
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 obscured by the dominant ones in the F1.
D) the traits were lost in the F1 due to dominance of the parental traits.
E) members of the F1 generation had only one allele for each trait, but members of the F2 had two alleles for each trait.
A laser-guided observation of the Milky Way Galaxy at the Paranal Observatory in Chile in 2010.
Gregor Mendel
The ability to roll the tongue is one of several traits that represent the dominant allele.
Some human traits controlled by a single gene
Molecular Identification and Characterization of Four of Mendel’s Traits
Persistent Juvenile Traits in Salamanders