It seems like you're referencing a Punnett square related to genetics, specifically regarding a trait where "B" represents the dominant allele and "b" represents the recessive allele. To create a Punnett square, you typically set up the alleles of the parents on the top and side of a grid to predict the offspring's genotype.
Here's a basic example:
- If both parents are homozygous dominant (BB), all offspring will be BB (100% dominant trait).
- If one parent is homozygous dominant (BB) and the other is homozygous recessive (bb), all offspring will be Bb (100% dominant trait).
- If both parents are heterozygous (Bb), the resulting Punnett square will produce:
- 25% BB
- 50% Bb
- 25% bb
This would represent a 75% chance of the dominant trait being expressed in the offspring and a 25% chance of the recessive trait being expressed.
If you need further assistance or a specific scenario with a Punnett square, feel free to provide more details!