Question

Which of the following are types of DNA variations that you would expect to find in the human population?

a) Insertions and deletions
b) Point mutations
c) Gene duplications
d) Chromosomal rearrangements

Answer 1

DNA variations in humans include insertions/deletions, point mutations, gene duplications, and chromosomal rearrangements. These contribute to genetic diversity and can lead to changes in the genetic code, protein function, or even large-scale structural changes in the chromosomes.

Step-by-step explanation:

The types of DNA variations you would expect to find in the human population include insertions and deletions, point mutations, gene duplications, and chromosomal rearrangements. Each of these can contribute to the genetic diversity observed within the human population.

• Insertions and deletions: These are types of mutations where DNA segments are inserted into or deleted from the chromosome, potentially altering the genetic code.
• Point mutations: These involve a change to a single nucleotide in the DNA sequence, such as a substitution, which could result in a different amino acid in a protein.
• Gene duplications: This mutation results when a segment of the chromosome is copied twice, leading to an extra copy of certain genes.
• Chromosomal rearrangements: These structural changes can be caused by deletions, duplications, inversions where a chromosome segment is reversed, or translocations where a chromosome segment attaches to a different chromosome.