Module 3-Lecture 15

Question 1

What does a random mutation mean?

Answer 1

It is not possible to predict the mutation ahead of time
-cannot predict where/when/how many mutations will happen

Question 2

What does a spontaneous mutation mean?

Answer 2

Occurring without apparent external cause

Question 3

True or false: mutations occur to make an organism better adapted

Answer 3

False
-Mutations have no higher purpose/happen to make the organism better adapted
-they are random mistakes

Question 4

Explain what directed mutation hypothesis is

Answer 4

organisms can purposefully cause specific changes in their DNA in response to environment

Question 5

Are mutations spontaneous or directed?

Answer 5

Spontaneous