In this chapter, we have focused on chromosomal mutations resulti...

Question

In this chapter, we have focused on chromosomal mutations resulting from a change in number or arrangement of chromosomes. In our discussions, we found many opportunities to consider the methods and reasoning by which much of this information was acquired. From the explanations given in the chapter, what answers would you propose to the following fundamental questions?How do we know that specific mutant phenotypes are due to changes in chromosome number or structure?

Accepted Answer

Hello, everyone. Here we have a question that says changes in chromosome structure or number are referred to as blank a point mutations. This is when a single base pair is added, removed or altered in a genome. So A is incorrect. B chromosome aberrations. This is when there are changes to the chromosome shape or number. Normally humans have 23 pairs of chromosomes. 22 of these pairs are autism and the final set is the sex chromosomes which determines a person's assigned sex. Most people with Xy chromosomes are assigned male at birth. Whereas most people with XX chromosomes are assigned female. Typically each parent gives a child, one set of chromosomes totaling 23 pairs in their offspring. A chromosomal aberration is caused by a change to any of the chromosomes, whether it be a number or structure. And what this does is can result in disorders. So our answer here is B chromosome aberrations. But let's look at our last two options. See trans locations. This is a chromosome rearrangement in which a segment of one chromosome separates and joins another SOC is incorrect. And the frame shift mutations. This is the insertion or deletion of nucleotide bases and amounts that are not in multiples of three. And this is significant because the cell reads the genetic code for proteins and groups of three. So these triplet code on each stand for one of the distinct amino acids that go into making a protein. The whole gene sequence after the mutation is, is misread if a mutation alters this reading frame. So the is incorrect. So our answer here is B chromosome aberrations. Thank you for watching. Bye.

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