Match column I with column II and select the correct option from the given codes
`{:(,"Column I",,"Column II"),("A.","Multiple allelism","(i)","Tt" xx "tt"),("B.","Back cross","(ii)","Tr" xx "TT"),("C.","Test cross","(iii)","Human blood groups"),("D.","Crossing over","(iv)","Non-parental gene combination"),("E.","Recombination","(v)","Non-sister chromatids"):}`

Options

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

Answer

To solve the problem of matching Column I with Column II, we will analyze each term in Column I and find its corresponding term in Column II based on the definitions and concepts related to genetics.

### Step-by-Step Solution:

1. **Identify Multiple Allelism (A)**:
- Multiple allelism refers to the presence of more than two alleles for a genetic trait. A classic example is the human blood groups (A, B, AB, O) which are determined by multiple alleles (IA, IB, i).
- **Match**: A → (iii) Human blood groups.

2. **Identify Back Cross (B)**:
- A back cross is a breeding method where an F1 hybrid is crossed back with one of its parents or an individual genetically similar to its parents. This is often done to test the genotype of the hybrid.
- **Match**: B → (ii) Tr × TT (where Tr represents the F1 hybrid).

3. **Identify Test Cross (C)**:
- A test cross involves crossing an individual with a homozygous recessive individual to determine the genotype of the former. This helps in identifying whether the individual is homozygous or heterozygous.
- **Match**: C → (i) Tt × tt.

4. **Identify Crossing Over (D)**:
- Crossing over occurs during meiosis when homologous chromosomes exchange segments, leading to genetic variation. This typically involves non-sister chromatids.
- **Match**: D → (iv) Non-parental gene combination.

5. **Identify Recombination (E)**:
- Recombination is the process by which genetic material is physically mixed during meiosis, resulting in new combinations of alleles. This often occurs through crossing over.
- **Match**: E → (v) Non-sister chromatids.

### Final Matches:
- A → (iii) Human blood groups
- B → (ii) Tr × TT
- C → (i) Tt × tt
- D → (iv) Non-parental gene combination
- E → (v) Non-sister chromatids

### Conclusion:
The correct option that matches Column I with Column II is:
- A → (iii)
- B → (ii)
- C → (i)
- D → (iv)
- E → (v)