Answer:
Since albinism is an autosomal recessive trait, it means that both parents must possess the gene for it, for the albinism to occur.
Thus, David could be the father if both Rose and David are carriers(heterozygotes) for the albino allele.
Answer:
25%
Explanation:
Based on Mendelian inheritance 4 offs-pings were produced,
XX haemophiliac first girl
XX carrier girl
XY HAEMOPHILIAC first boy
XY normal second boy
Since the father of the woman is haemophiliac, then she is a carrier fro haemophilia (although with normal vision) who inherited the allele of the the sex-linked X chromosomes from the father.
