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4.Principles of Inheritance and Variation
normal
The common point of attachment of all the arms of polytene chromosome, is known as
A
Centromere
B
Chromomere
C
Chromocentre
D
centrosomes
Solution
The polytene chromosomes radiate as $5$ long and $1$ short arm from a deeply staining and more or less amorphous structure called chromocentre. This chromocentre is formed by the fusion of centromeric region of all the chromosomes and in males, entire $Y-$chromosomes.
Standard 12
Biology
