Question

a farmer is considering the advantages of cloning a herd of cattle from a single cow. what is one advantage of a cloned herd?
o a all cattle in the herd would have the most desired traits.
o b all cattle in the herd would have more resistance to diseases.
o c all cattle in the herd would have more genetic variation.
o d all cattle in the herd would have much longer life spans.
question 18
what is used to create human insulin by bacteria?
o a restriction enzymes
o b crispr
o c recombinant dna
o d cloning
question 19
the main role of pcr is to quickly make many copies of the same segment of dna.
o true
o false

Explanation:

• Question 17: Cloning involves creating genetically identical organisms. If the original cow has desirable traits (e.g., high milk production, good meat quality), all cloned cattle will inherit those traits. Genetic variation (option c) is low in clones. Resistance to diseases (option b) and longer life - spans (option d) are not guaranteed just by cloning; these traits can be influenced by many factors beyond genetics.
• Question 18: Recombinant DNA technology is used to create human insulin by bacteria. Restriction enzymes (option a) are tools in recombinant DNA technology but not the whole process. CRISPR (option b) is a gene - editing tool. Cloning (option d) is not the method for producing insulin in bacteria.
• Question 19: The polymerase chain reaction (PCR) is specifically designed to amplify (make many copies of) a specific segment of DNA quickly.

Answer:

• Question 17: a. All cattle in the herd would have the most desired traits.
• Question 18: c. Recombinant DNA.
• Question 19: True.