Choose the correct option for the pedigree analysis given below:

Sickle cell anemia is a/an.....

Females rarely experience the physiologic defect of haemophilia because they do so only when they are:

If a colour blind woman marries a normal visioned man,their sons will be

If a color-blind woman marries a normal man,their offspring will be:

Given below is a pedigree chart of a family with five children. It shows the inheritance of attached earlobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct?