Recombinant Dna Technology

Question: Knockout mice are created by
[A].

mutagenizing a mouse and selecting for mutant offspring

[B].

creating a chimera by fusing cells from two different cell lines

[C].

infecting the mouse with a retrovirus

[D].

transfecting embryonic stem cells with an altered gene sequence

Answer: Option D

Explanation:

No answer description available for this question.

Question: An example of a restriction fragment length polymorphism is
[A].

an Eco RI cuts DNA at a different sequence than Hind III

[B].

different length fragments of DNA resulting from loss or gain of a restriction site

[C].

cystic fibrosis results from a three base deletion in most cases but in other cases, other mutations are involved

[D].

all of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: In gel electrophoresis, DNA molecules migrate from __________ to __________ ends of the gel.
[A].

negative … positive

[B].

basic … acidic

[C].

long … short

[D].

positive to negative

Answer: Option A

Explanation:

No answer description available for this question.

Question: In order to insert a foreign gene into a plasmid, both must __________
[A].

have identical DNA sequences

[B].

originate from the same type of cell

[C].

be cut by the same restriction enzyme

[D].

be of the same length

Answer: Option C

Explanation:

No answer description available for this question.

Question: Why is golden rice pale yellow in color?
[A].

It is rich in chlorophyll a.

[B].

It is rich in beta-carotene.

[C].

It is rich in chlorophyll b.

[D].

It is rich in phycobilins.

Answer: Option B

Explanation:

No answer description available for this question.