Question

Read the given statements.

(i) Centromere is present in the middle of the chromosome and forms two equal arms.
(ii) Chromosome has a terminal centromere.
(iii) Centromere lies close to the end of the chromosomes forming one extremely short and one very long arm.
(iv) Centromere lies slightly away from the middle of the longer arm.

Select the correct option as per the codes given above.

• A. $Metacentric-\left(i\right),Submetacentric-\left(iv\right),Acrocentric-\left(iii\right),Telocentric-\left(ii\right)$
• B. $Metacentric-\left(i\right),Submetacentric-\left(ii\right),Acrocentric-\left(iii\right),Telocentric-\left(iv\right)$
• C. $Metacentric-\left(iv\right),Submetacentric-\left(i\right),Acrocentric-\left(iii\right),Telocentric-\left(ii\right)$
• D. $Metacentric-\left(iv\right),Submetacentric-\left(ii\right),Acrocentric-\left(iii\right),Telocentric-\left(i\right)$

Answer 1

The correct option is A $Metacentric-\left(i\right),Submetacentric-\left(iv\right),Acrocentric-\left(iii\right),Telocentric-\left(ii\right)$

metacentric chromosome - has centromere in the center with arms of identical length on either sides (p=q) telocentric chromosome: has centromere at terminal end, one single arm, not distinguished as p and q sub metacentric chromosome: centromere slightly away from the centre, forming two unequal arms - p -shorter and q-longer acrocentric chromosome : centromere farther away from the center, closer to the terminal end. forms unequal arms, p-much shorter, q- quite longer. So, the correct answer is 'Metacentric−(i),Submetacentric−(iv),Acrocentric−(iii),Telocentric−(ii)'