Match the following with respect to chromosomal Mutation
`{:("Column - I ","Column - II"),("a. Tetrasomy ","(i) AABB"),("b. Double trisomy","(ii) 2n -1"),("c. Hypoploidy ","(iii) 2n +1"),("d.Allopolyploidy ","(iv) 2n+2"),(,"(v) 2n +1 +1):}`

Options

A. a (iv), b(ii) , c (i), d(v)
B. a (iv), b(v), c (ii), d (i)
C. a (iv), b (v) ,c (iii), d(ii)
D. a( ii), b(iii) ,c (i),d (iv)

Answer

To solve the problem of matching the chromosomal mutations from Column I to Column II, we need to understand the definitions and representations of each term provided in Column I. Here's a step-by-step breakdown:

### Step 1: Understand Tetrasomy
- **Definition**: Tetrasomy refers to the condition where there are four copies of a particular chromosome instead of the usual two. This means there are two extra copies of the same chromosome.
- **Representation**: If the normal diploid number is represented as 2n, then tetrasomy can be represented as \(2n + 2\).

### Step 2: Understand Double Trisomy
- **Definition**: Double trisomy is the presence of two different extra chromosomes, meaning there are two additional chromosomes, but they are not of the same type.
- **Representation**: If the normal diploid number is 2n, then double trisomy can be represented as \(2n + 1 + 1\) (which is equivalent to \(2n + 2\) but indicates two different chromosomes).

### Step 3: Understand Hypoploidy
- **Definition**: Hypoploidy refers to a condition where there is a loss of one or more chromosomes, resulting in fewer chromosomes than the diploid number.
- **Representation**: If the normal diploid number is 2n, then hypoploidy can be represented as \(2n - 1\).

### Step 4: Understand Allopolyploidy
- **Definition**: Allopolyploidy is a condition where an organism has two or more sets of chromosomes derived from different species, typically as a result of hybridization.
- **Representation**: If the normal diploid number is 2n, then allopolyploidy can be represented as \(2n\) (but typically expressed in terms of the specific species involved).

### Step 5: Match the Columns
Now we can match the terms from Column I with their corresponding representations in Column II:
- **Tetrasomy** (a) matches with **(iv) 2n + 2**
- **Double Trisomy** (b) matches with **(v) 2n + 1 + 1**
- **Hypoploidy** (c) matches with **(ii) 2n - 1**
- **Allopolyploidy** (d) matches with **(i) AABB** (indicating a hybrid with two sets of chromosomes from different species)

### Final Matching:
- a → (iv) 2n + 2
- b → (v) 2n + 1 + 1
- c → (ii) 2n - 1
- d → (i) AABB

### Summary of the Matches:
- a → (iv)
- b → (v)
- c → (ii)
- d → (i)