Find the incorrect match

Options

A. Allosomes -sex chromosomes
B. Lampbrus chromosomes- Diplotene bivalents
C. Polytene chromosomes- Oocytes of amphibians
D. Sub-metacentric chromosome- L-shaped chromosome

Answer

To find the incorrect match among the given pairs, we will analyze each pair one by one.

### Step-by-Step Solution:

1. **First Pair: Telosomes and Sex Chromosomes**
- Telosomes refer to sex chromosomes, which in humans are X and Y chromosomes.
- In humans, there are 22 pairs of autosomes and 1 pair of sex chromosomes (X and Y).
- **Conclusion:** This pair is correct.

2. **Second Pair: Lambrusch Chromosomes and Diplotene Bivalent**
- Lambrusch chromosomes are special types of chromosomes found in the immature eggs of many animals, particularly amphibians.
- They are formed during the diplotene stage of meiotic prophase I and are indeed bivalent.
- **Conclusion:** This pair is also correct.

3. **Third Pair: Polytene Chromosomes and Sites of Amphibians**
- Polytene chromosomes are giant chromosomes formed by repeated rounds of DNA replication.
- They are commonly found in the salivary glands of certain insects, such as Drosophila, and not in the oocytes of amphibians.
- **Conclusion:** This pair is incorrect.

4. **Fourth Pair: Submetacentric Chromosomes and L-shaped Chromosomes**
- Submetacentric chromosomes have a centromere that is off-center, resulting in one arm being shorter than the other, giving them an L-shape.
- **Conclusion:** This pair is correct.

### Final Conclusion:
The incorrect match is the third pair: **Polytene Chromosomes and Sites of Amphibians**.

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