Albinism is a recessive genetic disease. An albino man (Albert) marries a healthy woman (Maria) and they have 3 children: healthy Nour and Léa and albino Michel. 1- Indicate the genotype of the girls. Nour marries Thomas who is a healthy heterozygous individual. They are expecting a baby 2- Complete the genealogical tree of this family. b- Identify the genotypic and phenotypic percentages of their children. c- Justify the answer by a factorial analysis. d- Present the results obtained in a circular diagram. 3-a Nour and Thomas have doubts that their child has a chromosomal abnormality, Explain why. b- At what stage of mitosis should prenatal screening be done? Why ?