AP BIOLOGY

Detailed explanation-1: -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-2: -Point mutations involve the replacement of one base with another. Frame-shift mutations occur when a base is added or removed from the sequence.

Detailed explanation-3: -Insertion and Deletion These two types of point mutations are grouped together because both of them can drastically affect the sequence of amino acids produced. With one or two bases added or deleted, all of the three-base codons change.

Detailed explanation-4: -Types of Point Mutations. We are going to focus on the following point mutations: frameshift, silent, nonsense, and missense. Let’s start with a frameshift mutation, where there’s an insertion or deletion of one or more bases.

Detailed explanation-5: -Types Of Point Mutations There are three types of DNA mutations: base substitutions, deletions and insertions. Base Substitutions: When considering what a point mutation is, it’s also important to note that there are two other types of point mutations depending on whether there is a purine or pyrimidine base.