What will you call this set up 2n-2+2?

Options

A. nullisomy
B. nullisomic tetrasomy
C. double nullisomy
D. double tetrasomy

Answer

To solve the question "What will you call this set up 2n-2+2?", we will break it down step by step.

### Step 1: Understand the Expression
The expression given is 2n - 2 + 2. We need to simplify this expression first.

### Step 2: Simplify the Expression
Let's simplify the expression:
- Start with 2n - 2 + 2.
- Combine the constants: -2 + 2 = 0.
- So, the expression simplifies to 2n.

### Step 3: Relate to Chromosome Number
In genetics, "n" represents the number of chromosomes in a gamete, and "2n" represents the diploid number of chromosomes in a somatic cell.

### Step 4: Identify Chromosomal Variations
Now, we need to identify what the terms "nullisomy" and "tetrasomy" mean:
- Nullisomy (2n - 2) refers to the loss of both homologous chromosomes of a pair.
- Tetrasomy (2n + 2) refers to the gain of two extra chromosomes of a pair.

### Step 5: Combine the Terms
The expression we have is 2n - 2 + 2, which we simplified to 2n.
- The term "2n - 2" indicates nullisomy.
- The term "+2" indicates tetrasomy.

### Step 6: Conclusion
Putting it all together, we can conclude that the expression 2n - 2 + 2 represents a combination of nullisomy and tetrasomy. Therefore, we call this condition "Nullisomic Tetrasomy".

### Final Answer
The setup 2n - 2 + 2 is called "Nullisomic Tetrasomy".

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