Class VII

Which of the following changes does not occur in boys at maturity?
  1. Broadening region below waist
  2. Acne on the face
  3. Growth in voice box
  4. Penis develops completely
Reproductive life of woman starts at _____ and ends at ______.
  1. Menarche, menstruation
  2. Menstruation, menopause
  3. Menarche, menopause
  4. Menopause, menarche
What type of sex chromosomes pair is present in human males?
  1. ZZ
  2. ZW
  3. XX
  4. XY
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