Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?

726-650

  • [AIPMT 2012]
  • A

    Phenylketonuria

  • B

    Sickle cell anaemia

  • C

    Haemophilia

  • D

    Thalassemia

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If a character is always transmitted directly from a father to all his sons and from their sons to all their sons, then which chromosome carries the gene for the character

Given below is a pedigree chart of a family with five children. It shows the inheritance of attached earlobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals Which one of the following conclusions drawn is correct

  • [AIIMS 2004]

Study the pedigree chart given below.

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What does it show?

An example of a disease of molecular mutation is