Mutations

Question 1

What are mutants?

Answer 1

Mutants are any organism that has a genetic sequence that differs from the wild-type (common/normal sequence)

Question 2

Do mutations produce a phenotype?

Answer 2

Mutations don’t always produce a phenotype (outward appearance)

Question 3

What can mutations do?

Answer 3

mutations in DNA can drive changes in protein behaviour

Question 4

What are silent mutations?

Answer 4

Amino acids (base substitution) in the sequence can cause silent mutations if they’re in a particular position

Question 5

what happens if change the 1st?

Answer 5

1st position in the codon could possible change the amino acid, however ones in the 3rd are silent

Question 6

Siamese cats example

Answer 6

tyrosinase is responsible for the production of melanin pigment, the cats carry a temp. sensitive mutation doesn’t function at normal body temp colouration occurs on the cooler parts like face, ears, tails

Question 7

What processes cause a frameshift?

Answer 7

Deletion and addition

Question 8

What does the substitution of a nucleotide cause

Answer 8

causes a missense, slight change - may be impacted depends on the outcome