The answer is B. Think of it this way. You always give insulin with a meal cause they need to raise their blood sugar. Glucagon is given when the blood sugar is too high and needs to come down.
The answer is #4. The first and second one involve acid, which is chemical weathering. The third one involves oxidation, which is a chemical process. The only mechanical process is option four.
A single random allele from each pair of parent alleles will be passed on to the gamete.
The correct answer is A. Quantitative traits
Explanation:
In genetics, quantitative traits refer to traits or phenotypes (observable traits) that depend on many factors including multiple genes and actions in the environment. These traits differ from other traits because the traits tend to be more diverse in a population. In the case presented, the shell color in clams is an example of a quantitative trait because this phenotype is the result of three different each and each gene contains two alleles which means the color depends on many factors. Additionally, as most quantitative traits there is a higher variation in the phenotype considering clams can have different hues.