Question

What is the number of linkage groups in human beings?

• A. 46
• B. 22
• C. 92
• D. 23

Hint:

In humans, the number of linkage groups is equal to the number of chromosomes, which is 23 pairs.

Answer 1

The Correct Option is D

Step 1: Understanding linkage groups.
Linkage groups refer to groups of genes that tend to be inherited together due to their physical proximity on a chromosome. In humans, the number of linkage groups corresponds to the number of chromosomes.
Step 2: Analyze the options.
- 46: Humans have 46 chromosomes, but this is not the number of linkage groups. - 22: There are 23 pairs of chromosomes, so this is incorrect. - 92: This is not the correct number of linkage groups for humans. - 23: Humans have 23 pairs of chromosomes, which are the linkage groups in human beings.
Step 3: Conclusion.
The correct answer is (D) 23, as humans have 23 pairs of chromosomes, which represent the linkage groups.
Final Answer: \[ \boxed{23} \]