Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles, G and g. The dominant G allele results in green color, whereas the homozygous presence of the recessive g allele causes the plant to appear yellow. In a cross between plant A with unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained (200 in total), and the phenotyping data are below. What would be plant A's genotype? What would be the genetic distance between these two genes? Colored, green : 88 Colored, yellow: 12 Colorless, green: 8 Colorless, yellow: 92 A) RG/rg, 10 map units B) RG/rg, 20 map units C) Rg/rG, 10 map units D) Rg/rG, 20 map units E) R/r; G/g, > 50 map units

Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles, G and g. The dominant G allele results in green color, whereas the homozygous presence of the recessive g allele causes the plant to appear yellow. In a cross between plant A with unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained (200 in total), and the phenotyping data are below. What would be plant A's genotype? What would be the genetic distance between these two genes? Colored, green : 88 Colored, yellow: 12 Colorless, green: 8 Colorless, yellow: 92 A) RG/rg, 10 map units B) RG/rg, 20 map units C) Rg/rG, 10 map units D) Rg/rG, 20 map units E) R/r; G/g, > 50 map units

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 9CT

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