Bacterial genetics

Question 1

what are the 4 types of bacterial genetics?

Answer 1

1. transformation
2. conjugation
3. transposition
4. transduction

Question 2

what is transformation?

Answer 2

ability to take up naked DNA from environment

Question 3

what bacterias are able to do transformation?

Answer 3

SHiN
S. pneumoniae
H. influenzae type B
Neisseria

Question 4

how can you prevent transformation?

Answer 4

by adding deoxyribonuclease to environment will degrade naked DNA in medium –> no transformation seen.

Question 5

what are the 2 types of conjugation?

Answer 5

1. F+ X F-

2. Hfr X F-

Question 6

What does F+ plasmid contain?

Answer 6

F+ plasmid contains genes required for sex pilus and conjugation.

Question 7

what is high-frequency recombination (Hfr) cell?

Answer 7

F+ plasmid can become incorporated into bacterial chromosomal DNA then that cell becomes Hfr cell.