AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
a gene mutation in which a nucleotide is added:
A
Insertion
B
deletion
C
Inversion
D
substitution
Explanation: 

Detailed explanation-1: -An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication.

Detailed explanation-2: -An insertion mutation, also known as a gene insertion or DNA insertion, is a type of mutation where additional nucleotides are inserted into the DNA. DNA is the genetic material of the cell. It contains all of the instructions for cell structure and function.

Detailed explanation-3: -In other cases, mutations alter the way a gene is read through either the insertion or the deletion of a single base. In these so-called frameshift mutations, entire proteins are altered as a result of the deletion or insertion.

Detailed explanation-4: -Frameshift Mutation A frameshift mutation in a gene refers to the insertion or deletion of nucleotide bases in numbers that are not multiples of three. This is important because a cell reads a gene’s code in groups of three bases when making a protein.

Detailed explanation-5: -(in-SER-shun) A type of genetic change that involves the addition of a segment of DNA. It may be as small as a single base but can vary significantly in size.

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