Celebrating Genetic Diversity: Let's Talk Punnett Squares!
What are the possible genotypes and phenotypes of the offspring from a cross between a heterozygous and a homozygous recessive parent?
a) Genotypes: 50% Heterozygous, 50% Homozygous Recessive Phenotypes: 100% of the offspring will display the recessive phenotype.
b) Genotypes: 100% Heterozygous Phenotypes: 100% of the offspring will display the dominant phenotype.
c) Genotypes: 25% Heterozygous, 75% Homozygous Recessive Phenotypes: 25% of the offspring will display the dominant phenotype, and 75% will display the recessive phenotype.
d) Genotypes: 100% Homozygous Recessive Phenotypes: 100% of the offspring will display the recessive phenotype.
Answer:
In a cross between a heterozygous parent and a homozygous recessive parent, what are the expected genotypes and phenotypes of the offspring?
In a cross between a heterozygous parent (Hh) and a homozygous recessive parent (hh), the Punnett Square illustrates the possible genotypes of their offspring. Each square in the Punnett Square represents a 25% chance, so the genotypes of the offspring would be 50% heterozygous (Hh) and 50% homozygous recessive (hh).
In terms of phenotypes, the outcome will depend on which trait is dominant. If the dominant trait (represented by H) is indeed dominant, 50% of the offspring are expected to display the dominant phenotype (due to the Hh genotype), and the other 50% are expected to display the recessive phenotype (due to the hh genotype).
These percentages are theoretical and actual outcomes can be influenced by chance. Therefore, the expected genotypes would be 50% Heterozygous and 50% Homozygous Recessive. And in terms of phenotypes, it's expected that 50% of the offspring will display the dominant phenotype, while the other 50% will display the recessive phenotype.