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Q.
Barr body is absent in
NTA AbhyasNTA Abhyas 2022
Solution:
Barr's body is a compact structure of chromatin formed in the nuclei of mammalian females as a means to allow sex dosage compensation. A person with Turner syndrome will have no Barr bodies due to this they only have 1 X chromosome. Instead of having a set of 44 autosomes + 1 pair of sex chromosomes (either XX or XY)- the normal human karyotype, the person has only 44 autosomes + 1 X chromosome.