A type of chromosomal alteration in which a segment of chromosome breaks off and does not reattach to any chromosome is called (1) addi- tion (2) inversion (3) deletion (4) translocation
Question
A type of chromosomal alteration in which a segment of chromosome breaks off and does not reattach to any chromosome is called (1) addi- tion (2) inversion (3) deletion (4) translocation
Solution
To answer the question, we need to understand the different types of chromosomal alterations mentioned.
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Addition: This refers to the addition of an extra segment of chromosome to a chromosome. It involves the presence of an extra piece of genetic material.
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Inversion: In this type of chromosomal alteration, a segment of the chromosome breaks off and reattaches itself in the reverse orientation. This means that the genetic material is flipped or inverted.
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Deletion: This is the correct answer to the question. Deletion refers to the loss of a segment of chromosome during cell division. The segment breaks off and does not reattach to any chromosome, resulting in the loss of genetic material.
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Translocation: Translocation involves the exchange of genetic material between two non-homologous chromosomes. It occurs when a segment of one chromosome breaks off and attaches itself to a different chromosome.
Therefore, the correct answer to the question is (3) deletion.
Similar Questions
One type of change in chromosomal structure is an inversion, which occurs when Blank______.Multiple choice question.a chromosome segment has moved to a nonhomologous chromosomea chromosome segment is rotated 180 degreestwo simultaneous breaks lead to the loss of an internal segmenta chromosome segment is repeated in the same chromosome
An aberration in chromosome structure resulting from reattachment of a chromosomal fragment in a reverse orientation to the chromosome from which it originated.Group of answer choicestranslocationcrossing overnondisjunctionduplicationdeletioninversion
An aberration in chromosome structure resulting from attachment of a chromosomal fragment to a nonhomologous chromosome.Group of answer choicescrossing overnondisjunctioninversiondeletiontranslocationduplication
One type of change in chromosomal structure is a translocation, which occurs when Blank______.Multiple choice question.two simultaneous breaks lead to the loss of an internal segmenta chromosome segment has moved to a nonhomologous chromosomea chromosome segment is repeated in the same chromosomea chromosome segment is rotated 180 degrees
If a part of a chromosome breaks and reattaches on the same chromosome, but in a different orientation - it is known as?SplicingInversionTranslocationHybridisation
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