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Read the following four statements (A-D)...

Read the following four statements (A-D)
A. The first transgenic buffalo, Roise 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 step of rDNA technology
D. Disarmed pathogen vectors are also used in transfer of rDNA into the host
which of the two statements have mistakes ?

A

Statements a and c

B

Statements a and b

C

Statements b and d

D

Statements c and d

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each statement (A-D) one by one to determine if they are correct or incorrect. ### Step 1: Analyze Statement A **Statement A:** "The first transgenic buffalo, Roise produced milk which was human alpha-lactalbumin enriched." - **Analysis:** This statement is incorrect because the first transgenic animal was a cow named "Rosie," not a buffalo. Therefore, this statement contains a mistake. ### Step 2: Analyze Statement B **Statement B:** "Restriction enzymes are used in isolation of DNA from other macromolecules." - **Analysis:** This statement is also incorrect. Restriction enzymes are not used for the isolation of DNA from other macromolecules; instead, they are used to cut DNA at specific sequences. The isolation of DNA typically involves other methods such as centrifugation and precipitation. Thus, this statement contains a mistake. ### Step 3: Analyze Statement C **Statement C:** "Downstream processing is one of the steps of rDNA technology." - **Analysis:** This statement is correct. Downstream processing refers to the purification and recovery of the product after the recombinant DNA technology process. Therefore, this statement does not contain a mistake. ### Step 4: Analyze Statement D **Statement D:** "Disarmed pathogen vectors are also used in the transfer of rDNA into the host." - **Analysis:** This statement is correct. Disarmed pathogen vectors, such as modified viruses, are indeed used to transfer recombinant DNA into host cells. Therefore, this statement does not contain a mistake. ### Conclusion After analyzing all four statements, we find that: - **Statements with mistakes:** A and B - **Correct statements:** C and D ### Final Answer The two statements that have mistakes are A and B. ---
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