Blood Type Genetics and Probabilities

The video tutorial explains the ABO blood grouping system, detailing the dominant and recessive nature of A, B, and O genes. It covers genotypes and phenotypes for each blood type and uses Punnett squares to predict offspring blood types. The tutorial includes case studies to solve real-life blood type problems and explores the Rh factor's genetic implications.

Which of the following blood groups is considered recessive in the ABO blood grouping system?

• O

• AB

• B

• A

What is the genotype of a person with blood type B who has one dominant and one recessive allele?

• AB

• BB

• OO

• BO

If a type O female marries a type AB male, what are the possible blood types of their children?

• A and B

• A and O

• B and O

• AB and O

In a scenario where a father is heterozygous type A and a mother is homozygous type B, what is the probability of having a child with blood type AB?

• 100%

• 0%

• 25%

• 50%

If a couple has a child with blood type A, and the mother is homozygous type A while the father is type O, what is the child's genotype?

• BO

• OO

• AO

• AA

Mr. and Mrs. Jones have blood type B and 12 children. If 3 of their children have blood type O, what is the likely genotype of the parents?

• BB and BB

• BO and BO

• BB and BO

• BO and OO

What are the possible genotypes for an Rh+ phenotype?

• ++

• ++ and +-

• --

• +-

If a child is Rh negative, what can be inferred about the Rh genotype of the parents?

• Both are --

• Both are +-

• One is ++ and one is --

• Both are ++

A child with blood type O negative has parents with blood types O+ and A+. What is the mother's genotype?

• BO

• OO

• AO

• AA

In the context of Rh factor, which phenotype is dominant?

• Rh-

• Rh+

• Both are equally dominant

• Neither is dominant