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Get Answers to all your Questions
Match the columns.
|
Column I (Chromosome types) |
Column II (Position of centromere) |
|
1. Metacentric |
a. Close to its end |
|
2. Sub-Metacentric |
b. Middle |
|
3. Acrocentric |
c. Terminal |
|
4. Telocentric |
d. Slightly away from the middle |
1-a,2-b,3-c,4-d
1-b,2-d,3-a,4-c
1-d,2-b,3-a,4-c
1-b,2-d,3-c,4-a
Answers (1)
A chromosome's centromere houses its two chromatids. The four different kinds of chromosomes may be distinguished by the location of the centromere. The central centromere of the metacentric chromosome divides into two equally sized-arms. One shorter arm and one longer arm come from the sub-metacentric chromosome's centromere being slightly off-center from the chromosome's center. While the telocentric chromosome contains a terminal centromere, the acrocentric chromosome's centromere is located towards its end, generating one extremely short and one very long arm. Hence option 2 is the correct answer.
Explanation for the incorrect options :
Option 1 is incorrect because all the matched pairs are incorrect.
Option 3 is incorrect because, in the Metacentric chromosome, the centromere is at the middle while in the Sub-metacentric the centrosome is slightly near to the middle.
Option 4 is incorrect because while the Telocentric chromosome contains a terminal centromere, the Acrocentric chromosome's centromere is located towards its end, generating one extremely short and one very long arm.
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