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NEET 2009
Exam
NEET
Year
2009
Subject
Zoology
Chapter
Principles of Inheritance and Variation

NEET 2009 · Zoology · Principles of Inheritance and Variation

Point mutation involves

Point mutation involves

Options

  1. Ainsertion
  2. Bchange in single base pair
  3. Cduplication
  4. Ddeletion

Correct answer

B. change in single base pair

Step-by-step solution

The point mutations involve alterations in the structure of gene by altering the structure of DNA. Point mutations are of two types-(i) base pair substitution and (ii) frameshift substitution. Insertion is the addition of one or more nitrogenous bases to a nucleotide chain. Duplication is the presence of one block of genes more than once in a haploid component. Deletion is the removal of one or more nitrogenous bases from a nucleotide chain.
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