Blood Type Punnett Square Calculator

Blood Type Inheritance:

Blood types are determined by combinations of alleles (A, B, O) inherited from both parents. Each parent contributes one allele.

Possible Offspring Blood Types:

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1. What is a Blood Type Punnett Square?

A Punnett square is a diagram that predicts the possible genetic outcomes for offspring based on the alleles (gene variants) of the parents. For blood types, it shows the possible combinations of parental alleles (A, B, O) that determine the child's blood type.

2. How Does the Calculator Work?

The calculator determines the possible blood types by:

1. Identifying possible alleles from each parent's blood type
2. Creating all possible allele combinations
3. Determining the resulting blood type for each combination
4. Calculating the probability of each blood type

Example: A parent with blood type A can have alleles A or O, while a parent with blood type B can have alleles B or O.

3. Blood Type Inheritance Basics

Key Points:

A and B are codominant alleles
O is recessive to both A and B
Blood type A can be AA or AO
Blood type B can be BB or BO
Blood type AB is always AB
Blood type O is always OO

4. Using the Calculator

Instructions: Select the blood types of both parents and click "Calculate" to see the possible blood types of their offspring and the probability of each.

5. Frequently Asked Questions (FAQ)

Q1: Can two parents with type A have a child with type O?
A: Yes, if both parents are AO (carrying the O allele), there's a 25% chance their child will be OO (type O).

Q2: Can an AB parent and an O parent have an O child?
A: No, the AB parent must pass either A or B, so the child will be either A or B.

Q3: What's the rarest blood type?
A: AB negative is the rarest, occurring in about 1% of the population.

Q4: Can blood type be used for paternity testing?
A: Blood type can exclude paternity in some cases but cannot definitively prove paternity.

Q5: Why is type O considered the universal donor?
A: Type O blood lacks A and B antigens, so it can be donated to people with any blood type.