AP BIOLOGY

HEREDITY

MUTATIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mutations are random.
A
True
B
False
Explanation: 

Detailed explanation-1: -The statement that mutations are random is both profoundly true and profoundly untrue at the same time. The true aspect of this statement stems from the fact that, to the best of our knowledge, the consequences of a mutation have no influence whatsoever on the probability that this mutation will or will not occur.

Detailed explanation-2: -“We always thought of mutation as basically random across the genome, ” said Grey Monroe, an assistant professor in the UC Davis Department of Plant Sciences who is lead author on the paper. “It turns out that mutation is very non-random and it’s non-random in a way that benefits the plant.

Detailed explanation-3: -“We always thought of mutation as basically random across the genome, ” said Grey Monroe, PhD, an assistant professor in the University of California, Davis, department of plant sciences. “It turns out that mutation is very nonrandom and it’s nonrandom in a way that benefits the plant.

Detailed explanation-4: -Although mutations are thought to occur randomly in the genome, the distribution of mutations that cause biological diversity appears to be highly nonrandom.

Detailed explanation-5: -This is because of selection. When mutations happen in parts of the genome that code for important genes, then very often those cells don’t survive. The harmful mutations are weeded out by selection, so we don’t see them.

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