Assume you cross a pure plant that has the genotype GG with a pure pea plant that has the genotype gg. What are all of the possible genotypes of the offspring?
GG, Gg, and gg

Only GG

GG and gg

Only Gg

D. Only Gg

Explanation:

We have a plant with genotype GG and another with genotype gg. We need to make a Punnett Square (see attachment). Basically, we're putting the two alleles of Parent 1 (G and G) at the columns and the two alleles of Parent 2 (g and g) at the rows. Then, we "cross" them.

Notice from the Punnett Square that the only possible genotype of the offspring is Gg. The answer is D.

Hope this helps!

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.