Question

In almost 70% of cystic fibrosis cases, a set of three base pairs is lost from chromosome 7. this results in the loss of an amino acid in the cftr gene, causing cystic fibrosis.
what type of mutation is described?
-deletion
-nondisjunction
-substitution
-translocation

Answer 1

Almost 70% of cystic fibrosis cases result in the loss of an amino acid in the CFTR gene, causing cystic fibrosis due to a deletion.

What is a mutation?

A mutation is any genetic alteration in the genetic material (DNA molecule) of the genome of an organism.

A deletion is a special type of mutation where nucleotide bases are lost from the genetic material.

Insertions and deletions are mutations collectively referred to as indels, whereas single nucleotide polymorphisms are called SNPs.

Learn more about mutations here:

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