If a female having gene for haemophilia and colour-blindness on one X-chromosome marries a normal male, then what are the chances in their offspring?
1. 50% sons diseased and 50% normal
2. All normal offspring
3. 100% daughters are carrier
4. 100% sons diseased

First child of a normal male and female is albino, what are the chances of second child being albino:
1.  25%
2.  50%
3.  75%
4.  100%