Match column I with column II and select the correct option from the given codes
`{:(,"Column I",,"Column II"),("A.","Turner's syndrome","(i)","Trisomy"),("B.","Linkage","(ii","AA + XO"),("C.","Y-chromosome","(iii)","Morgan"),("D.","Down's syndrome","(iv)","TDF"):}`

Options

A. A-(ii),B-(i),C-(iv),D-(iii)
B. A-(iv),B-(i),C-(ii),D-(iii)
C. A-(iv),B-(ii),C-(i),D-(iii)
D. A-(ii),B-(iii),C-(iv),D-(i)

Answer

To solve the matching question between Column I and Column II, we will analyze each item in Column I and find its corresponding match in Column II based on biological concepts.

### Step-by-Step Solution:

1. **Identify Turner's Syndrome (A)**:
- Turner's syndrome is a chromosomal condition that affects females, characterized by the absence of all or part of one of the X chromosomes.
- The typical notation for Turner's syndrome is 45, X0 (where one X chromosome is missing).
- **Match**: A. Turner's syndrome → (ii) AA + XO.

2. **Identify Linkage (B)**:
- Linkage refers to the tendency of genes that are located close to each other on a chromosome to be inherited together.
- This concept was first observed by Thomas Hunt Morgan in his studies with Drosophila (fruit flies).
- **Match**: B. Linkage → (iii) Morgan.

3. **Identify Y-Chromosome (C)**:
- The Y chromosome carries the gene responsible for male sex determination, known as the Testes Determining Factor (TDF).
- **Match**: C. Y-chromosome → (iv) TDF.

4. **Identify Down's Syndrome (D)**:
- Down's syndrome, also known as Trisomy 21, occurs when there is an extra copy of chromosome 21.
- This condition is characterized by the presence of three copies of chromosome 21 (trisomy).
- **Match**: D. Down's syndrome → (i) Trisomy.

### Final Matches:
- A → (ii) AA + XO
- B → (iii) Morgan
- C → (iv) TDF
- D → (i) Trisomy

### Conclusion:
The correct matches are:
- A with (ii)
- B with (iii)
- C with (iv)
- D with (i)

Thus, the correct option is **D**.