In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. when plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?

100%

Explanation:

If;

RR represents alleles for red flowers

rr represents alleles for white flowers

Then, Rr will represent alleles for pink flowers

When RR is crossed with rr, all the offspring will be Rr

RR   x   rr   = Rr, Rr, Rr, Rr

Hence, all the offspring (100%) will have pink flowers

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.