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Question
Which of the following types of chromosome will not get transferred to the next generation?
Which of the following types of chromosome will not get transferred to the next generation?
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Solution
The correct option is D Acentric
Normally, chromosomes contain DNA molecules organised such that they have one centromere and two telomeres. If a chromosome lacks a centromere, spindle fibres will not get attached to it. Hence, it will not be dragged to either of the poles at anaphase stage of mitosis and meiosis and will end up not being incorporated into the progeny nucleus. Such acentric chromosomes, usually produced due to chromosomal rearrangements, are not inherited.
Metacentric, telocentric and acrocentric chromosomes have centromeres which permit spindle fibre attachment and the segregation of chromatids during anaphase.
Normally, chromosomes contain DNA molecules organised such that they have one centromere and two telomeres. If a chromosome lacks a centromere, spindle fibres will not get attached to it. Hence, it will not be dragged to either of the poles at anaphase stage of mitosis and meiosis and will end up not being incorporated into the progeny nucleus. Such acentric chromosomes, usually produced due to chromosomal rearrangements, are not inherited.
Metacentric, telocentric and acrocentric chromosomes have centromeres which permit spindle fibre attachment and the segregation of chromatids during anaphase.
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