Answer:
Reverse mutations in the colonies enabled to recover the ability to synthesize histidine. The 2-aminoanthracene is a chemical agent that induce mutations and therefore it is potentially a carcinogen.
Explanation:
A reverse (suppressing) mutation is a type of mutation capable of restoring the activity of previously mutated genes. On the other hand, 2-aminoanthracene is an aromatic amine carcinogen capable of inducing hepatic and skin tumors. In this case, 2-aminoanthracene has been used to induce reverse mutations at <em>loci</em> responsible for the synthesis of histidine.
1. The answer is Density
2. Two ways to make peace with your body are to create a positive mental outlook and to give yourself credit
3.When on a weight-gain diet, untrained men tend to initially gain about 2 pounds of muscle per month, and 20 pounds or more per year. This is because there is more area in the body available for muscle growth that's why muscle fibers are easily developed and recruited to perform muscle contractions.
4. <span>figure out where in your day you could eat more food.
5. amino acids
6. weight
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When river water<span> meets </span>sea water<span>, the lighter </span>fresh water<span> rises up and over the denser </span>salt water<span>. </span>Sea water<span> noses into the estuary beneath the outflowing </span>river water<span>, pushing its way upstream along the bottom. Often, as in the Fraser </span>River<span>, this occurs at an abrupt </span>salt<span> front</span>
