Answer
if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2
= 1. If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0.
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Living organisms obtain many of their requirements by diffusion. They also get rid of many of waste materials in this way. For example, Plants need carbon dioxide for photosynthesis. This diffuses from the air into the leaves through the stomata. It does this because there is a lower concentration of carbon dioxide inside the leaf as the cells are using it up. Outside the leaf in the air, there is a higher concentration. Carbon dioxide molecules therefore diffuse into the leaf down this concentration gradient :)
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The glucocortocoids has the ability of increasing the bone
loss while having a composition of serotonin in high levels will likely have
the bone density to be at its low level. To complete the sentence;
Glucocorticoids increase bone loss; high levels of serotonin lead to low bone
density.
That is your pectoralis minor, the chest muscle is usually just referred to as your pectoral muscle but its actually divided into an upper and lower half