In the 1950' s, a young woman sued film star/director Charlie Chaplin for parental support of her illegitimate child.Charlie Chaplin's blood type was already on record as type AB.The mother of the child had type O and her son had type B blood.Should the judge rule in favor or against the mother? A. For A.Goto question 13 B. Against B-Go to questience?

## Step 1The problem involves understanding the inheritance of blood types. The ABO blood group system is determined by the ABO gene, which has three alleles: , , and . The and alleles are co-dominant, meaning that if both are present, they will both be expressed. The allele is recessive and will only be expressed if no or alleles are present.## Step 2A person with type AB blood has both and alleles. A person with type O blood has two alleles. ## Step 3Given that Charlie Chaplin has type AB blood, he can only pass on either an or an allele to his offspring. The mother of the child has type O blood, so she can only pass on an allele.## Step 4The child has type B blood, which means he must have received an allele from his father and an allele from his mother. This is possible, as Charlie Chaplin could have passed on the allele.## Step 5Therefore, the judge should rule in favor of the mother, as it is possible for Charlie Chaplin to be the biological father of the child.