A normal­visioned man whose father was colour­ blind, marries a woman whose father was also colour­blind. They have their first child as a daughter. What are the chances that this child would be colour­ blind ?

  • [AIPMT 2012]
  • A

    $1$

  • B

    Zero percent

  • C

    $0.25$

  • D

    $0.5$

Similar Questions

Study the given pedigree chart and select the correct option of the given question.

$(1)$ Is the trait recessive of dominant ?

$(2)$ is the trait sex linked or autosomal ?

The most important example of point mutation is found in a disease called

Match the following - (w.r.t. Pedigree analysis)

Column $-I$ Column $-II$
$a.$ Solid symbol $(i)$ Carrier of sex linked trait
$b.$ Horizontal line between symbols $(ii)$ Offspring
$c.$ Horizontal line above the symbols $(iii)$ Trait to be studied
$d.$ Dot in centre $(iv)$ Parents

The most striking example of point mutation is found in a disease called

  • [AIPMT 1995]

Phenyketonuria is a genetic disorder of