The shorter and longer arm of a sub-metacentric chromosomes are referred as:
s- arm and l-arm respectively
p - arm and q- arm respectively
q- arm and p - arm respectively
m - arm and n - arm respectively
Types of chromosomes -
Based on the position of centromere, the chromosomes can be classified into four types:
1) Metacentric chromosome- middle centromere forming two equal arms.
2) Sub-metacentric- centromere slightly away from the center.
3)Acrocentric- centromere is situated close to its end
4)Telocentric- terminal centromere
In submetacentric chromosomes the centromere is palced at submedian. The arms become unequal in length. The short arm is called the p- arm and the long one is called q-arm.
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