Question

Which of the following is a sex-linked character?

• A. Anaemia
• B. Colourblindness
• C. Baldness
• D. All of these

Hint:

Sex-linked traits are usually associated with the X chromosome, making them more prominent in males.

Answer 1

The Correct Option is D

Step 1: Understand sex-linked traits.
Sex-linked traits are those that are associated with the sex chromosomes (X and Y). These traits are often found on the X chromosome and can result in certain conditions being more common in one sex.
Step 2: Review the options.
- Anaemia, specifically sickle cell anaemia, can be inherited as a sex-linked trait, though not as commonly. - Colourblindness and baldness are classic examples of sex-linked traits. They are often passed on through the X chromosome, with males being more likely to express these traits due to having only one X chromosome.
Step 3: Conclude.
All three conditions—anaemia, colourblindness, and baldness—can be sex-linked, making option (D) the correct answer.
Final Answer: \[ \boxed{\text{All of these}} \]