Concept explainers
Introduction:
Single
Answer to Problem 1MC
Correct answer:
Translocation causes a change in the location of the gene on the chromosome locus whereas single nucleotide polymorphism is caused due to change of an amino acid at a single position in the polypeptide chain. Therefore, option (a) is correct.
Option (a) is given as “It is usually caused by a translocation mutation”.
Explanation of Solution
Justify reasons for the correct statement:
Single nucleotide polymorphism changes the structure, function and molecular mechanism of the protein due to an alteration of an amino-acid at a single position on the polypeptide chain.
Hence, option (a) is correct.
Justify reasons for the incorrect statements:
Option (b) is given as “It is usually caused by a nucleotide substitution mutation”. This mutation causes a change in the amino acid present at a specific position in the polypeptide leading to a change in the functioning mechanism of the protein. Hence, it is a wrong answer.
Option (c) is given as “It may change the
Option (d) is given as “It is inherited from parent to offspring”. Genes are inherited from parent to offspring. Hence, it is a wrong answer.
Hence, options (b), (c), and (d) are incorrect.
The statement which is not true regarding the single nucleotide polymorphism is that it is usually caused by a translocation mutation. Translocation mutation is caused due to the change in the chromosome locus of the gene under study whereas the single nucleotide polymorphism is caused due to the alteration and replacement of an amino-acid at a specific position of the polypeptide chain.
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Chapter 14 Solutions
Biology: Life on Earth with Physiology (11th Edition)
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