Question

Match the following chromosomes with the alphabets they resemble.

$\begin{array}{cccc}& \text{Types of chromosomes}& & \text{Resemblance}\\ \text{i}& \text{Acrocentric}& \text{a}& \text{L}\\ \text{ii}& \text{Telocentric}& \text{b}& \text{I}\\ \text{iii}& \text{Sub-metacentric}& \text{c}& \text{V}\\ \text{iv}& \text{Metacentric}& \text{d}& \text{J}\end{array}$

• A. i-c, iv-d, ii-b, iii-a
• B. i-d, iv-c, ii-b, iii-a
• C. i-a, iv-d, ii-b, iii-c
• D. i-b, iv-c, ii-d, iii-a

Answer 1

The correct option is B i-d, iv-c, ii-b, iii-a

• In acrocentric chromosomes, the centromere is near one end of the chromosome due to which it looks like the english letter ‘J’. Here, one arm is much smaller than other.
• In metacentric chromosomes, the centromere is positioned in the centre and it looks like english letter 'V'.
• Sub-metacentric chromosomes have their centromere positioned just above the centre and it looks like english letter 'L'
• Centromere in telocentric chromosomes is positioned above the tip and it looks like English letter 'I'.
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