How many Barr bodies (inactivated X chromosomes) are expected in cells of a human individual who is XXX, 2A.
A. 1
B. 2
C. 3
D. None of the above.
B 2
Explanation- The amount of protein produced by X-linked genes in males and females is equalized by dosage compensation. If a cell contains more than two X chromosomes, all except one X chromosome is inactivated and become barr body. So there will be 2 barr bodies of an individual having 3 X chromosomes.
How many Barr bodies (inactivated X chromosomes) are expected in cells of a human individual who...
A triple-X (XXX) individual has how many Barr bodies? O 2 O 3 04
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Il. Define and give examples of Chromosomes (how many are in normal human somatic cells, how many in gametes?) Karyotype Describe the karyotypes of normal male, normal female, Down syndrome, Turners Syndrome and Klinefelter's Syndrome Define "autosomes" and "sex chromosomes" Define and give an example: A. Gene B. Allele C. Dominant Allele D. Recessive Allele E. Incomplete mode of inheritance F. Co-dominant alleles G. Sex-inked genes
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