If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called
a. A deletion
b. An inversion
c. A translocation
d. A non-disjunction

Question

If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called

a. A deletion

b. An inversion

c. A translocation

d. A non-disjunction

Accepted Answer

Hello everyone and welcome to today's video. So the deletion or the addition of a single nucleotide is often more serious than losing or adding three nucleotide. So why is this? What type of mutation do we get? Well, in order to solve this problem, we're actually going to be visualizing reading frame or just a strand of nucleotides are gonna code for a protein here. We have these three coatings. Now it says that the deletion or the addition of a single nucleotide is often more serious than losing or adding three nucleotides. Let's first visualize what happens when we lose three nucleotides. Let's say that we lose these here. Well we lost a code on however, we still have the remaining of the protein intact so it could still function. However, what happens when we insert or when we lose a single nucleotide? Which let's say that we're going to insert timing into here. So we will have a whole new reading frame. Now we would have a completely different protein than the one we previously had. So since this is the regional reading frame and this reading frame was completely changed to a new reading frame. This type of mutation where we are or they lead a single nucleotide is actually going to be called a frame shift mutation because of the effect that it has on the reading frame because of this, the correct answer choice is going to be answer choice B frame shift mutation. I really hope this video helped you and I hope to see you on the next one

If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called
a. A deletion
b. An inversion
c. A translocation
d. A non-disjunction

Verified video answer for a similar problem:

Key Concepts

Chromosomal Inversion

Chromosomal Deletion

Chromosomal Translocation

If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called a. A deletionb. An inversionc. A translocationd. A non-disjunction

Verified video answer for a similar problem:

Key Concepts

Chromosomal Inversion

Chromosomal Deletion

Chromosomal Translocation

If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called
a. A deletion
b. An inversion
c. A translocation
d. A non-disjunction