A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion

  • A

    Daughters normal, $50\%$ of sons colourblind

  • B

    Daughters normal, all sons colourblind

  • C

    $50\%$ of daughters colourblind, all sons normal

  • D

    All daughters colourblind, sons normal

Similar Questions

Sickle cell anaemia is due to

  • [AIPMT 1990]

:Match the columns :

Column $I$
 
Column $II$
 
$(a)$ Sickle cell anaemia  $(x)$ Homogentisic acid
$(b)$ Alkaptonuria $(y)$  Melanin pigmentsare absent
$(c)$ Albinism $(z)$  More amount of phenyl alanine
$(d)$ Phenyl Ketonuria $(w)$  Defective haemoglobin

A colourblind daughter is born when

Colourblindness is caused due to

Following characters are indicate

$(i)$ presence of sickle - shaped $RBC$

$(ii)$ Blood not clot, non stop bleeding

$(iii)$ The heterozygous female transmit the disease to sons.

$(iv)$ Both heterozygous parents transmit the disease to offspring