![]() ![]() Ĥ.All of these heterozygote genotypes demonstrate the coexistence of two phenotypes within the same individual. If the organism with the dominant phenotype is homozygous, then all of the F 1 \text. The set of alleles carried by an organism is known as its genotype. When a researcher would like to obtain the gene expression for generations of an organism, they use the phenotypic ratio obtained from a test cross. ![]() It's important to note here that each box represents a possible offspring.Ģ.A phenotypic ratio is a quantitative relation between phenotypes showing the number of times the frequency of one phenotype correlates with another. This means there is a 100% chance of the offspring having brown eyes, or being BB. Looking at the possible offspring, each box (or possible offspring) has two copies of the dominant gene. 1.The phenotype is the trait those genes express.
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