A normal woman, whose father was colour-blind is married to a normal man. The sons would be
All normal
All colour-blind
$75\%$ colour-blind
$50\%$ colour-blind
A normal visioned woman, whose father is colour blind, marries a normal visioned man. What would be probability of her sons and daughters to be colour blind ? Explain with the help of a pedigree chart.
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?
The amino acid substituted in sickle cell anaemia is
$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic
If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?