Green pea plants are dominant. (G) Yellow pea plants are recessive. (g) What percentage chance is it that a yellow pea plant would come from one parent being green (Gg) and the other being Green (Gg).

25%

Explanation:

if you set up a punnett square you'll get GG,Gg, Gg, and gg. only gg would be yellow so 25%

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.