4.4 study guide

Question 1

What is a mutation?

Answer 1

A change in a base sequence in a DNA molecule

Question 2

What is a point mutation?

Answer 2

A substitution of a single base

Question 3

What can be a point mutation?

Answer 3

Silent mutations, missense, and nonsense

Question 4

What can be frameshift mutations?

Answer 4

Insertations, deletions, and a shift in the reading frame

Question 5

What are the steps when using a codon table?

Answer 5

1) transcribe DNA sequence 2) translate template DNA

Question 6

What is the role of mRNA in translation?

Answer 6

Contains the mesage for amino acid sequence

Question 7

What is the role of tRNA in translation?

Answer 7

Transfers amino acids, contains anticodons that pair with anticodons

Question 8

What is the role of rRNA in translation?

Answer 8

Makes up the ribosome, matching of mRNA and tRNA

Question 9

What is a codon?

Answer 9

3 bases of RNA that will translate to 1 amino acid

Question 10

If 3 nucleotides coded for 1 amino acid, we could have up to ____ different amino acids

Answer 10

64