If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
$50\%$
$25\%$
$100\%$
no chance
Colour blindness is a disease usually affecting man but the factor for it is transmitted to the children always by woman. This is because particular factor is located on
Carrier of genes of colour blindness are present in
Sicklecell anaemia is
Which of these is not a Mendelian disorder?
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 ?