Cohen and Boyer isolated an antibiotic resistance gene, by cutting out a piece of DNA from a plasmid which was responsible for conferring antibiotic resistance, in the year

Options

A. 1962
B. 1965
C. 1972
D. 1982

Answer

**Step-by-Step Solution:**

1. **Identify the Scientists Involved**: The question mentions two scientists, Cohen and Boyer, who were involved in isolating an antibiotic resistance gene.

2. **Understand the Process**: They isolated the gene by cutting out a piece of DNA from a plasmid. Plasmids are small, circular DNA molecules that can replicate independently of chromosomal DNA and are often used in genetic engineering.

3. **Determine the Year of Discovery**: The question asks for the specific year when this isolation of the antibiotic resistance gene was accomplished. According to historical records, this significant achievement took place in 1972.

4. **Select the Correct Option**: The options provided are 1962, 1965, 1972, and 1982. Based on the information gathered, the correct answer is 1972.

5. **Conclude the Answer**: Therefore, the final answer to the question is that Cohen and Boyer isolated the antibiotic resistance gene in the year **1972**.

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