In the model of dna, the colored pegs represent the four nitrogen bases found in every dna molecule. one possible correct labeling suggestion could be

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.