Topic 7 - Genetics

Question 1

What is speciation

Answer 1

Evolution of a new species from an existing species

Question 2

Inversion mutation

Answer 2

Occurs during crossing-over in meiosis
DNA of a single gene is cut in two places, the cut portion is inverted 180° then rejoined to the same place within the gene
Result in non-functional proteins

Question 3

Duplication mutation

Answer 3

A whole gene/section is repeated so that two copies appear on the same chromosome
Mutation is not harmful

Question 4

Translocation mutation

Answer 4

Section of a gene is cut off and attaches to a separate gene
The cut gene is now non-functional