Cytogenetic location

Question 1

How do geneticists indicate the location of a gene?

Answer 1

Geneticists use maps to describe the location of a particular gene on a chromosome.

One type of map uses the cytogenetic location to describe a gene’s position.

The cytogenetic location is based on a distinctive pattern of bands created when chromosomes are stained with certain chemicals.

Another type of map uses the molecular location, which is a precise description of a gene’s position on a chromosome.

The molecular location is based on the sequence of DNA building blocks (nucleotides) that make up the chromosome.