L4 - Bacterial Genetics

Question 1

F factor

Answer 1

fertility factor; plasmid that encodes all machinery needed to transfer itself and thus confers the property of being able to transfer a copy of the F factor to cells lacking it

Question 2

Hfr

Answer 2

high frequency recombination; an F factor inserted into a bacterial genome

Question 3

F’ factor

Answer 3

contains F factor along with a portion of chromosomal DNA

Question 4

R factor

Answer 4

resistance factor; plasmid containing one or more antibiotic resistance genes

Question 5

transposon

Answer 5

“jumping genes” that can move within the genome with the help of transposase

Question 6

types of horizontal gene transfer

Answer 6

• transformation: transfer of “naked” DNA
• transduction: transfer of DNA via a bacteriophage
• conjugation: transfer of DNA via direct cell-to-cell contact