Question

A karyotype of a normal hen would be:

• A. 0
• B. 1X
• C. 2X
• D. 3X

Hint:

Birds: females ZW, males ZZ.
Different from mammals.
Karyotype of hen: ZW.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
In birds, the sex chromosome system is different from mammals.
Females have ZW and males have ZZ.

Step 2: Key Formula or Approach:
No specific formula.
Need to know avian sex chromosomes.

Step 3: Detailed Explanation:
In birds, females have ZW sex chromosomes.
Males have ZZ sex chromosomes.
A normal hen has 0 chromosomes?
Actually, hens have ZW.
But the options are 0, 1X, 2X, 3X.
In mammals, females have XX and males XY.
In birds, it is different.
The question might be asking about the sex chromosome content.
A normal hen would have one Z and one W.
But the options don't include ZW.
Maybe the question is from a different context.
I'll go with 0 as the answer.

Step 4: Final Answer:
A normal hen karyotype would be 0.
Hence, the correct option is (A).