AP BIOLOGY

HEREDITY

MUTATIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A mutation that removes 1 base from the DNA sequence.
A
Deletion
B
Insertion
C
Substitution
D
Missense
Explanation: 

Detailed explanation-1: -Point/deletion mutation: point mutations are mutations affecting a single nucleobase. In the case of deletion mutations, one nucleobase is removed from the DNA sequence usually during DNA replication. Frameshift: this type of mutation occurs as a result of deletion point mutations.

Detailed explanation-2: -A deletion changes the DNA sequence by removing at least one nucleotide in a gene. Small deletions remove one or a few nucleotides within a gene, while larger deletions can remove an entire gene or several neighboring genes. The deleted DNA may alter the function of the affected protein or proteins.

Detailed explanation-3: -Definition. A deletion, as related to genomics, is a type of mutation that involves the loss of one or more nucleotides from a segment of DNA. A deletion can involve the loss of any number of nucleotides, from a single nucleotide to an entire piece of a chromosome.

Detailed explanation-4: -(deh-LEE-shun) A type of genetic change that involves the absence of a segment of DNA. It may be as small as a single base but can vary significantly in size.

Detailed explanation-5: -Base substitution Base substitutions are the simplest type of gene-level mutation, and they involve the swapping of one nucleotide for another during DNA replication.

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