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Question
Chromosome number increase or decrease sometimes due to
Chromosome number increase or decrease sometimes due to
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Solution
The correct option is A Non-disjunction of chromosome
The inability of separation of homologous chromosomes or sister chromatids during anaphase 1 and it remains in the progeny is called a non-disjunction of chromosomes. Due to it, the number of chromosomes may be an increase or decrease. Mutation is the change in DNA sequences during formation or due to any environment factors e.g., UV radiation, any harmful chemicals.Thus, the correct answer is A.
The inability of separation of homologous chromosomes or sister chromatids during anaphase 1 and it remains in the progeny is called a non-disjunction of chromosomes. Due to it, the number of chromosomes may be an increase or decrease. Mutation is the change in DNA sequences during formation or due to any environment factors e.g., UV radiation, any harmful chemicals.
Thus, the correct answer is A.
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