WW x WW Punnett Square Calculator
Specialized calculator for analyzing homozygous dominant genetic crosses. Calculate inheritance patterns and genetic probabilities when both parents carry identical dominant alleles.
WW x WW Cross Calculator
Parent 1 (WW)
WW
Homozygous Dominant
Parent 2 (WW)
WW
Homozygous Dominant
Understanding WW x WW Homozygous Dominant Crosses
A WW x WW cross represents a homozygous dominant genetic cross where both parents carry two identical copies of the dominant allele. This type of punnett square calculator demonstrates the most predictable inheritance pattern in genetics with 100% certainty of dominant trait expression.
Key Characteristics of WW x WW Crosses
Genetic Certainty
All offspring will be homozygous dominant (WW) with 100% probability
Phenotype Expression
100% of offspring will express the dominant phenotype
Genotype Ratio
Genotype ratio is 4:0 (all WW)
Phenotype Ratio
Phenotype ratio is 4:0 (all dominant)
Practical Applications
- Selective Breeding: Used in agriculture and animal breeding to maintain desirable dominant traits
- Genetic Counseling: Helps predict inheritance when both parents have the same dominant condition
- Population Genetics: Important for understanding trait fixation in populations
- Educational Purposes: Demonstrates basic Mendelian inheritance principles
Examples of WW x WW Traits
Physical Traits
- • Widow's peak hairline
- • Facial dimples
- • Freckles
- • Cleft chin
Medical Conditions
- • Huntington's disease
- • Polydactyly
- • Brachydactyly
- • Achondroplasia
Agricultural Traits
- • Disease resistance
- • Fruit color
- • Plant height
- • Seed characteristics
Genetic Significance
WW x WW crosses represent the endpoint of selective breeding for dominant traits. When both parents are homozygous dominant, there's no genetic variation in the offspring for that particular trait, leading to what geneticists call "breeding true" for the dominant characteristic.
Important Note: While WW x WW crosses guarantee dominant trait expression, they also reduce genetic diversity. In natural populations, this can be concerning, but in controlled breeding programs, it can be advantageous for maintaining desired characteristics.