Herança autossômica dominante
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The autosomal dominant inheritance calculator estimates the likelihood of passing a genetic trait or condition to offspring. It operates on the principle that only one dominant allele (from either parent) is needed to express the trait. If one parent carries the dominant allele, each child has a 50% chance of inheriting it.
This tool is useful for genetic counseling, family planning, or academic genetics studies. For instance, if a parent has a dominant condition and the other does not, the calculator predicts the risk of affected children. The calculation follows Mendelian segregation: each gamete receives one gene copy, and the combination with the other parent determines the phenotype.
Remember this tool provides statistical probabilities, not certainties. Factors like unaccounted genetic mutations may affect outcomes. Always consult a genetic professional for clinical interpretation.
Frequently asked questions
Why is the chance 50%?
Autosomal dominant inheritance follows Mendel's rules: each child gets one gene from each parent. If the affected parent is heterozygous (Aa), there's a 50% chance to pass the dominant (A) or recessive (a) allele.
Does it work for recessive inheritance?
No, this tool is specific to dominant traits. Use the autosomal recessive inheritance calculator for recessive conditions.
Can I calculate multiple generations?
Yes, but each generation needs a separate calculation. Probabilities can be multiplied for independent events.
Does the calculator consider mutations?
No, spontaneous genetic mutations are not included in calculations, which might alter real outcomes.