HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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involves two nonhomologous chromosomes, part of one breaks off and is transferred to the other.
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occurs when a piece of chromosome is lost or removed
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is when a segment of a chromosome flips and reattaches
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occurs when a gene sequence is repeated
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Detailed explanation-1: -An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.
Detailed explanation-2: -(in-VER-zhun) A chromosomal defect in which a segment of the chromosome breaks off and reattaches in the reverse direction.
Detailed explanation-3: -Definition. An inversion in a chromosome occurs when a segment breaks off and reattaches within the same chromosome, but in reverse orientation. DNA may or may not be lost in the process.
Detailed explanation-4: -Inversion: When a segment of DNA is flipped and then reattached to the same chromosome. Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome. Translocation: When two segments from different chromosomes change positions.
Detailed explanation-5: -An inversion occurs when a chromosome breaks at two points and the segment bounded by the breakpoints is reinserted in the reversed orientation.