Steps when analysing a pedigree diagram for an autosomal recessive disorder.

Having learnt about the structure of a pedigree diagram, we now learn about the analysis of this diagram in order to be able to determine the phenotypes. We look at the example of the inheritance of albinism in a family.

Video bookmarks/chapters:
0:00-0:19 Introduction
0:19-2:03 Step 1 getting the important information from the question
2:03- 2:32 Step 2: fill in all recessive individuals as homozygous.
2:32- 3:25 Step 3: fill in parents of recessive as heterozygous.
3:25- 4:42 Step 4: fill in all children of recessive individuals as heterozygous.
4:42- 6:41 Step 5: why all of the remaining individual could either be homozygous or heterozygous.