Sources of Variation

Question 1

-Changes in nucleotide sequence
-Alterations impossible to predict
-Mutation creates variation
Survival of the fittest (so that population becomes highly adapted to its environment

Answer 1

Mutations

Question 2

Substitution in one base in a gene

-Transition, Transversion, Same Sense, Missense, Nonsense

Answer 2

Point mutation

Question 3

• Purine to purine

- Pyrimidine to Pyrimidine

Answer 3

Transition

Question 4

-Purine to Pyrimidine

Answer 4

Transversion

Question 5

Codes for the same amino acid

Answer 5

Same Sense

Question 6

Codes for different amino acid

Answer 6

Missense

Question 7

A change in bases causes a stop codon-termination translation

Answer 7

Nonsense

Question 8

Changes in the DNA sequence by either deletion or addition of bases

Answer 8

Frameshift mutation

Question 9

Changes that alter, delete, disrupt, or rearrange the genes in the chromosomes

Answer 9

Structural Mutations

Question 10

Aneuploidy and Euploidy

Answer 10

Numerical Changes

Question 11

Addition/deletion of one or more chromosome in a normal set (genome)

Answer 11

Aneuploidy

Question 12

Changes involving the whole genome or entire set of chromosomes

Answer 12

Euploidy