Question

Foreign DNA is acquired and expressed by a cell through taking in naked DNA. This is

a		horizontal transfer and transformation
b		vertical transfer and transformation
c		horizontal transfer and transduction
d		expressive transfer and translocation
e		horizontal transfer and transfection

Replica plating is used

	a	to identify an auxotrophic mutant
	b	to identify heterotrophic mutants
	c	for cell viability counts
	d	to preserve a partciular culture
	e	to show selective growth on media

H

how is an RFLP different from a gene?

	A	not transcribable
	B	not DNA
	C	cannot be replicated using PCR
	D	does not contain nucleotide Thymine
	E	is a ribozyme

W

which does not add a specific gene to a cell?

	A. protoplast fusion
		B. gene gun
		C. microinjection
		D. electroporation
		E. transformation 2.Restriction endonuclease sites are often purposely located in a vectors b bacterial genomes c eukaryotic genomes d therapeutic applications e the polymerase chain reaction

Answer 1

1. Option a is correct

Foreign DNA is acquired and expressed by a cell through taking in naked DNA. This ishorizontal transfer and transformational.

2. Option a is correct

Replica plating is a method of screening to isolate mutant auxotrophs from wild-type bacteria.

,3 . option c is correct.

cannot be replicated using PCR

4. Option a is correct

Protoplasts. Fusion doesn't add a specific gene to cell.

5. Option b is the correct answer

Restriction endonuclease sites are often purposely located in bacterial genomes.