Create a problem that uses a monohybrid cross and work it out.
Understanding Monohybrid Cross
A monohybrid cross is a genetic cross between two individuals who are heterozygous for a single trait of interest. In this type of cross, we focus on one specific trait controlled by a single gene with two different alleles. It helps us understand the principles of inheritance and genetic variation within a population.
Problem:
Question: In pea plants, the flower color is controlled by a single gene with two alleles - purple (P) and white (p). Perform a monohybrid cross between a heterozygous purple-flowered plant and a white-flowered plant. What are the possible genotypes and phenotypes of the offspring?
What is the genotype of the heterozygous purple-flowered plant? The genotype of the heterozygous purple-flowered plant would be Pp, where P represents the dominant allele for purple color and p represents the recessive allele for white color. What is the genotype of the white-flowered plant? The genotype of the white-flowered plant would be pp, as it only carries the recessive allele for white color. What are the possible genotypes and phenotypes of the offspring from this monohybrid cross? The possible genotypes of the offspring would be PP, Pp, and pp. The phenotypes would be purple-flowered for PP and Pp genotypes, and white-flowered for the pp genotype, following the 3:1 ratio according to Mendelian genetics.