CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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deletion
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duplication
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inversion
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translocation
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Detailed explanation-1: -Inversion – when a segment of a chromosome? is reversed end to end.
Detailed explanation-2: -Inversions are a special type of mutation in which a piece of chromosomal DNA is flipped 180 degrees. For an inversion to occur, two breaks occur in a chromosome, the region between the breaks gets inverted, and the ends of the region get rejoined to the rest of the chromosome.
Detailed explanation-3: -A point mutation can be reversed by another point mutation, in which the nucleotide is changed back to its original state (true reversion) or by second-site reversion (a complementary mutation elsewhere that results in regained gene functionality).
Detailed explanation-4: -Mutations can be of many types, such as substitution, deletion, insertion, and translocation.