Term 'Pure line' was coined by

Options

A. Mendel
B. Johannsen
C. Bateson
D. T.H. Morgan

Answer

**Step-by-Step Solution:**

1. **Understanding the Term 'Pure Line':**
- A pure line refers to a group of genetically identical individuals that are homozygous for a particular trait. This means that all the alleles in the individuals of this line are the same, leading to uniformity in the expression of traits.

2. **Identifying the Scientist:**
- The question asks about the scientist who first coined the term "pure line." This involves looking into the history of genetics and the contributions of various scientists.

3. **Historical Context:**
- The term "pure line" was first described in the context of genetics and inheritance. This concept is crucial for understanding how traits are passed down through generations.

4. **Finding the Correct Scientist:**
- After reviewing the contributions of notable geneticists, it is established that the term "pure line" was coined by the scientist Johansen in the year 1903.

5. **Conclusion:**
- Therefore, the correct answer to the question is that the term "pure line" was coined by Johansen in 1903.

**Final Answer:**
The term 'Pure line' was coined by Johansen in 1903.

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