The two things a Punnett square can tell you are the genotypes and phenotypes of the offspring. A genotype is the genetic makeup of the organism. This is shown by the three genetic conditions described earlier (BB, Bb, bb). The phenotype is the trait those genes express.
Also asked, how can the genotype of a person be determined?
.~ An organism can be thought' of as a large collection of phenotypes. A phenotype is the appearance of a traitand is determined by pairs of genes. The pairs of genes represent the genotype for the trait. However, if a trait is determined by incomplete dominance, you can tell if you are homozygous or heterozygous.
What is the ratio of genotypes?
Supplement. The genotypic ratio describes the number of times a genotype would appear in the offspring after a test cross. For example, a test cross between two organisms with same genotype, Rr, for a heterozygous dominant trait will result in offspring with genotypes: RR, Rr, and rr.
What would be the genotype for a carrier?
The Genotype of a Carrier. If a trait is recessive, two copies of the allele are required for the physical appearance of the trait in the organism. This means only those with a homozygous recessive genotype, such as bb, will exhibit a recessive trait.