Question

Recall the story about Charlie Chaplin in the chapter. Why is it impossible that he was the child's father based on blood type? O All could be true None could be true O Chaplin and Barry would have produced children that were either type A or type O The father had to be type AB, providing the B allele O The father had to be type B, providing the B allele The Case of Charlie Chaplin Blood typing has historically been a diagnostic tool for paternity testing, but it was not always admissible in court. One example involves Charlie Chaplin, the great slapstick comedian of the early 20th century. In the 1940s he had an affair with an actress named Joan Barry, who said he was the father of her child. Chaplin was shown to be a type o individual, while Barry was type A. The child was type B, which many experts agreed was evidence that he could not be the father. Since blood typing was not admissible as evidence at the time of the trial, Chaplin was found by the court to be responsible for the child. The notoriety of his case led to a change in paternity laws in the United States, but this scandal (among others) drove him to back to England (Charlie Chaplin And Paternity' In Modern Times).

Answer 1

Answer: Chaplin and Barry would have produced children that were either type A or type O.

Step-by-step explanation:

Based on the blood types provided in the story, it is impossible that Charlie Chaplin was the child's father. The blood type information given is as follows:

Charlie Chaplin: Type O

Joan Barry: Type A

Child: Type B

According to the ABO blood type inheritance rules:

Type O individuals have OO alleles.

Type A individuals can have AA or AO alleles.

Type B individuals can have BB or BO alleles.

Given that Joan Barry is type A (AA or AO) and the child is type B (BB or BO), the only way for the child to have type B blood is if Joan Barry is a carrier of the B allele (BO). Since Charlie Chaplin is type O (OO), he cannot contribute a B allele to the child. Thus, it is impossible for Charlie Chaplin to be the biological father of the child.

Options that could be true based on this information are:

Chaplin and Barry would have produced children that were either type A or type O.

The father had to be type AB, providing the B allele.

The father had to be type B, providing the B allele.