Under the directional selection, the genotype might change and the genotypes is the one that represent larger individuals become more prevalent. It might change, the Genotype frequencies under directional selection that the Genotypes that represent larger individuals become more prevalent. The answer in this question is the genotypes is the one that represent larger individuals become more prevalent.
The awnsers would be D for the first one and A for the second. Let me know if you want an explanation.
In the winter its color changes to more resemble their <em>winter</em> surroundings, so they are more white, enabling them to blend in better with their white surroundings. In summer, its color changes to more resemble its <u><em /></u><em>summer</em> surroundings, so they are more brown like the rocks and ground around them.
Explanation:
BB=Brown as both are big B's
Bb=Brown as there is a big B
bb=Blue as both are little b's
First Blank Space:Flourens
Second Blank Space:Broca