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.
Below are the choices that can be found elsewhere:
A) dimensional B) categorical
<span>C) diathesis D) sociological
</span>
The answer is B categorical.
<span>One criticism of the DSM noted by your author is that it adheres to a categorical model, which means that a person is seen as either having a mental disorder, or not having a mental disorder. There is little or no allowance for “degrees” of a disorder.</span>
Answer:
When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases. And lower average kinetic energy of the molecules means they have lower speed.
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The main function of xylem tissue in the plant transport system is to transport water.
Answer: C) or the third option.
