In pedigree analysis,the symbol $ʘ$ is used for:

Which type of abnormality is seen in the given pedigree chart?

Haemophilia is caused due to the lack of:

Give differences: Haemophilia and Sickle-cell Anaemia.

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

The given pedigree chart shows which type of inheritance?