solve a Punnett square-
Seed shape- round- R
Wrinkled- r
Dominant RR
Rr
Recessive- rr
To solve a Punnett square for seed shape with the genotypes Dominant (RR or Rr) and Recessive (rr), you would use the following format:
| R | r
--------|------------|-------
R | RR | Rr
--------|------------|-------
r | Rr | rr
In this Punnett square, the columns represent the gametes (sperm or eggs) from one parent, while the rows represent the gametes from the other parent. The letters in each box represent the possible genotypes of their offspring.
- If one parent has the genotype RR, then all of their gametes will carry the dominant allele R.
- If the other parent has the genotype rr, then all of their gametes will carry the recessive allele r.
By combining the gametes, the Punnett square shows the possible genotypes of the offspring. In this case, the Punnett square shows that all of the offspring will have the genotype Rr, resulting in round seed shape.