6.7,8: Naturl Selection On Mutations And Increasing Genetic Variation Flashcards
1
Q
Mutations at any time can be subject to natural selection. Why might this be beneficial?
A
- genetic changes can sometimes enhance the survival and reproduction of an organism
2
Q
How can prokaryotes exchange genetic material?
A
Horizontal gene transfer
3
Q
What does horizontal gene transfer mean?
A
- if there is a mutation that is beneficial to the survival and reproduction of that prokaryote, then it can also be transferred
4
Q
What are four ways that prokaryotes do horizontal gene transfer?
A
- transformation
- transduction
- conjugation
- transposition
5
Q
What is transformation?
A
Uptaking of DNA from a nearby cell
6
Q
What is transduction?
A
Viral transmission of genetic material
7
Q
What is conjugation?
A
Cell to cell transfer of DNA
8
Q
What is transposition?
A
Movement of DNA segments within and between DNA molecules
