genetic diseases cell divisions

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Number of sex chromosomes in human is

Number of sex chromosomes in human is
  • A. 5
  • B. 10
  • C. 15
  • D. None of above
  • Correct Answer: Option D

Position of Centromeres is

Position of Centromeres is
  • A. fixed in a particular chromosome
  • B. varies in a particular chromosome
  • C. changes in interphase
  • D. None of above
  • Correct Answer: Option A

Males have one X and one Y chromosome,

Males have one X and one Y chromosome,
  • A. both chromosomes are of same size
  • B. X is bigger than Y
  • C. Y is bigger then X
  • D. Y has some portions missing and therefore, smaller than X
  • Correct Answer: Option D

23 homologous chromosomes can be differentiated in

23 homologous chromosomes can be differentiated in
  • A. maternal chromosomes
  • B. paternal chromosomes
  • C. Both A and B
  • D. None of above
  • Correct Answer: Option C

In chromosomes, the

In chromosomes, the
  • A. lengths of chromatid arms can vary
  • B. position of centromeres can vary
  • C. sizes of chromosomes can vary
  • D. All of above
  • Correct Answer: Option D