X-Linked Recessive Trait Punnett Square Calculator

X-linked recessive inheritance is a key concept in genetics that explains why some traits, like hemophilia and color blindness, are more common in males than females. Our X-Linked Recessive Trait Punnett Square Calculator makes it easy to visualize and predict how these traits pass from parents to offspring. Whether you’re a student, teacher, or genetics enthusiast, this tool helps you explore non-Mendelian inheritance patterns with just a few clicks. Find more free and accurate inheritance calculators on our homepage.

In X-linked recessive inheritance, the trait is carried on the X chromosome. Males (XY) have only one X chromosome, while females (XX) have two. This means that a single affected X chromosome in males will express the trait, while females must inherit two affected X chromosomes to express the trait. Our calculator lets you select parental genotypes (e.g., carrier mother, affected father) and generates a Punnett square showing the probability of affected, carrier, and unaffected offspring by gender.

• Genotype Combinations: All possible X-linked allele pairings from both parents.
• Phenotype Predictions: Clear results showing which offspring will be affected, carriers, or unaffected.
• Gender-Based Outcomes: Differentiation between male and female offspring inheritance patterns.

Understanding X-linked recessive inheritance is crucial for studying disorders like hemophilia, Duchenne muscular dystrophy, and red-green color blindness. Our calculator is ideal for:

• Students: Learning how sex-linked traits work.
• Teachers: Demonstrating non-Mendelian inheritance patterns in the classroom.
• Families: Exploring the likelihood of inheriting X-linked conditions.

• Parents: Carrier mother (X^N X^r) and unaffected father (X^N Y)
• Punnett Square Results:
  • Sons: 50% unaffected (X^N Y), 50% affected (X^r Y)
  • Daughters: 50% carriers (X^N X^r), 50% unaffected (X^N X^N)

Our calculator displays this in a clear, easy-to-read chart and summary table, making it simple to understand how traits pass from parents to children.

1. Select the mother’s genotype (X^N X^N, X^N X^r, or X^r X^r).
2. Select the father’s genotype (X^N Y or X^r Y).
3. Click Calculate to generate the Punnett square.
4. View results showing genotype and phenotype distributions for both sexes.
5. Download or copy results for classroom activities or personal study.

1. Carrier Status (Females Only):
   Females with one affected X chromosome are carriers and can pass the trait to their children.
2. Gender-Linked Inheritance:
   Males inherit the X chromosome from their mother and the Y chromosome from their father, meaning X-linked traits come from the mother’s side.
3. Phenotype vs. Genotype:
   An affected male will always express the trait if he inherits the affected X chromosome.

Why are X-linked recessive traits more common in males?

Because males have only one X chromosome—if it carries the trait, it’s expressed.

Can a father pass an X-linked trait to his son?

No, fathers pass their Y chromosome to sons and their X chromosome to daughters.

Can a female express an X-linked recessive trait?

Yes, but only if she inherits two affected X chromosomes (one from each parent).

• Carrier Probability Calculator
• Autosomal Recessive Trait
• Incomplete Dominance
• Probability of Homozygous vs. Heterozygous Offspring
• Trihybrid and Polyhybrid Cross Calculator

Our X-Linked Recessive Trait Punnett Square Calculator simplifies learning about sex-linked inheritance, making it easy to predict how traits pass through generations. Whether you’re studying, teaching, or simply exploring genetics, this tool is a must-have for your learning journey.