Mutation

Question 1

change in the
nucleotide sequence of
a gene or a chromosome

Answer 1

Mutation

Question 1

failure of embryonic prosencephalon to properly divide the orbits of the eye into two cavities

Answer 1

Cyclopia

Question 2

a point mutation that changes the amino acid

Answer 2

Missense mutation

Question 3

a point mutation changes the amino acid to a “stop”

Answer 3

Nonsense mutation

Question 4

a point mutation that does not change the amino acid

Answer 4

Silent mutation

Question 5

• are physical or chemical
  agents that cause mutations
• act by increasing the
  spontaneous mutation rate
• can be used to induce
  mutations

Answer 5

mutagens

Question 6

is a deletion or insertion of one or more nucleotides that changes the reading frame of the
base sequence

Answer 6

Frameshift mutations

Question 7

These are mutations that
change only one (or a few)
base pairs in a DNA molecule

Answer 7

Point mutations