Read the following four statements (A-D) about certain mistakes in two of them:
(A) The first transgenic buffalo, Rosie produced milk which was human alpha-lactalbumin enriched.
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules.
(C) Downstream processing is one of the steps of r-DNA technology.
(D) Disarmed pathogen vectors are also used in transfer of r-DNA into the host.
Which are the two statements having mistakes?

Statements (A) and (B)

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Statements (B) and (C)

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Statements (C) and (D)

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Statements (A) and (C)

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Solution

The correct option is A Statements (A) and (B)
(A) Rosie was the first transgenic cow and its milk was rich in human alpha-lactalbumin protein.
(B) Restriction enzymes are used in the isolation of the specific segment of DNA from the DNA of the organism because these enzymes are capable of cutting the DNA at the specific location.
(C) Downstream processing is one of the steps in the r-DNA technology. It involves the extraction and purification of the desired product.
(D) Disarmed pathogens like Agrobacterium tumifaciens, phage viruses are also used in the transfer of r-DNA into the host.
Hence, the correct answer is '(A) and (B)'

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Similar questions

Read the following four statements (A - D).

(A) The first transgenic cow, Rosie produced milk which was human

α

- lactalbumin enriched.

(B) Restriction enzymes are used in isolation of DNA from other macromolecules.

(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host.

Which of the above statement is wrong?

Read statement a-d. Which two of them have mistakes?
(a) First transgenic buffalo, Rosie produced milk which was human alpha lactalbumin enriched.
(b) Restriction enzymes are used in isolation of DNA from other macromolecules.
(c) Downstream processing is one of the steps of r-DNA technology.
(d) Disarmed pathogen vectors are also used in transfer of r-DNA into the host.

Q. Amongst the following four statements (A-D) some are wrong.

A) Unarmed pathogen vectors are also used in the transfer of recombinant DNA into the host.
B) Restriction enzymes are used in isolation of DNA from other macro-molecules.
C) Downstream processing is one of the steps of separating recombinant DNA from other macro-molecules.
D)The first transgenic sheep, Rosie produced enriched milk with human

α

-lactalbumin.
Which are the two statements with mistakes?

Q. Which one of the following is wrong?
(A) The first transgenic cow Rosie, produced milk which was human alpha-lactalbumin enriched.
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules.
(C) Downstream processing is one of the steps of R-DNA technology.
(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host.

Q. Read the following statements and select the incorrect ones.

(i) When the transformed cells on agar plates containing ampicillin are spread, both transformed and untransformed cells will grow.

(ii) Restriction enzymes are used in isolation and separation of DNA from other macromolecules.

(iii) Downstream processing is one of the steps of rDNA technology.

(iv) Disarmed pathogen vectors are also used in the transfer of rDNA into the host.

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