<prompt> True statement regarding chromosomesIn females both X chromosomes are activatedKlinefelter syndrome results due to an extra Y chromosome in malesGerminal cells contain 23 chromosomesTurner syndrome results due to an extra X chromosome in females  <response>: Ans. b Klinefelter syndrome results due to an extra Y chromosome in malesRef: Robbins 9thpg 166; 8thpg 165a. False: Only one of the X chromosomes is genetically active, the other X of either maternal or paternal origin undergoes heteropyknosisand is rendered inactive called Barr body, so females have one activated chromosomeb. True: Klinefelter syndrome is best defined as male hypogonadism that occurs when there are two or more X chromosomes and one or more Y chromosomesc. False: Germs cells have haploid set of 23 chromosomesd. False: Turners is due to missing X chr. 