In tomato plants, round is dominant to elongated fruit and smooth skin is dominant to fuzzy skin. In a test cross between a heterozygous tomato plant with round fruit shape and smooth fruit skin and a homozygous recessive plant with elongated fruit shape and fuzzy skin, the following numbers of offspring were counted: 246 smooth, round 24 smooth, long 24 fuzzy, round 266 fuzzy, long Are these results consistent with the hypothesis that these genes are independently assorting?

In tomato plants, round is dominant to elongated fruit and smooth skin is dominant to fuzzy skin. In a test cross between a heterozygous tomato plant with round fruit shape and smooth fruit skin and a homozygous recessive plant with elongated fruit shape and fuzzy skin, the following numbers of offspring were counted: 246 smooth, round 24 smooth, long 24 fuzzy, round 266 fuzzy, long Are these results consistent with the hypothesis that these genes are independently assorting?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 7QP: Sunflowers with flowers 10 cm in diameter are crossed with a plant that has 20-cm flowers. The F1...

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In garden pea, resistance to a certain disease is controlled by a single locus with dominance forresistance (R) and recessive susceptible (r). Another locus governs seed color with yellow being dominant (Y)to green (y). A pea plant which is heterozygous for both gene pairs is crossed with a susceptible and green-seeded plant. The following data was observed in the progeny. Phenotype NumberResistant yellow 43Susceptible green 49Resistant green 16Susceptible yellow 12Total 120 a. What is the calculated chi-square value based on an independent assortment assumption? Compute forthe df and write the conclusion. (NOTE: The cross will not yield a 9:3:3:1 ratio since not both of theparental genotypes are heterozygous for the 2 pairs of alleles. Thus, perform the cross first, show theparental genotypes, the gamete…
Dominant allele R in corn results in purple kernel, while recessive allele r results in pearl white kernel in homozygous condition. The plant body colour is controlled by another gene with two alternative alleles, G for green colour and g for yellow colour. In a testcross between a corn plant with unknown genotype and a plant that is homozygous recessive for both genes, the following progeny were obtained: Phenotype Purple, green Purple, yellow Pearl white, green Pearl white, yellow Number 90 12 10 88 Explain how these results were obtained by determining the exact genotype of the unknown plant. Include the precise gene arrangement on the homologous chromosomes.
Assume that, in a series of experiments, plants with round seeds were crossed with plants with wrinkled seeds and the following offspring were obtained: 215 round and 185 wrinkled. How do you explain these observations and what would be the expected number of offspring with round seed and with wrinkled seed? The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is expected to show 200 round and 200 wrinkled seed. The plants with round seeds are homozygous for the round seed phenotype and F1 offspring is expected to show 300 round and 100 wrinkled seed. The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is expected to show 100 round and 300 wrinkled seed. The plants with round seeds are homozygous for the round seed phenotype and F1 offspring is expected to show 200 round and 200 wrinkled seed. The plants with round seeds are heterozygous for the round seed phenotype and F1 offspring is…
Considering the Mendelian traits round versus wrinkledand yellow versus green, consider the crosses belowand determine the genotypes of the parental plants byanalyzing the phenotypes of their offspring.Parental Plants Offspring(a) round, yellow * round, yellow 3/4 round, yellow1/4 wrinkled, yellow(b) wrinkled, yellow * round, yellow 6/16 wrinkled, yellow2/16 wrinkled, green6/16 round, yellow2/16 round, green(c) round, yellow * round, yellow 9/16 round, yellow3/16 round, green3/16 wrinkled, yellow1/16 wrinkled, green(d) round, yellow * wrinkled, green 1/4 round, yellow1/4 round, green1/4 wrinkled, yellow1/4 wrinkled, green
In the Roselle plant, the dominant allele of gene 'A' codes for a pink flower and the recessive form codes for yellow flowers, while the dominant form of gene 'B' codes for serrated leaves, while the recessive form codes for smooth leaves. If the genes are trans linked, what are the expected genotypes and phenotypes and the respective ratios when plants heterozygous for both genes are test crossed?
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, Y and y. The dominant Y allele results in green color, whereas the homozygous presence of the recessive y allele causes the plant to appear yellow. In a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained: colored, green 88 colored, yellow 12 colorless, green 8 colorless, yellow 92 Explain how these results were obtained by determining the exact genotype and phenotype of the unknown plant, including the precise arrangement of the alleles on the homologs.
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A sugarcane plant with yellow pollen and wavy leaves is crossed with a plant with yellow pollen andsmooth leaves. Seed are collected and germinated. The following results are obtained in the progeny:153 yellow pollen, wavy leaves145 yellow pollen, smooth leaves48 white pollen, wavy leaves 51 white pollen, smooth leavesa. For each locus (trait), assign appropriate symbols for the alleles of the genes, indicate thedominance interaction between the two alleles, and give all possible genotypes and theirassociated phenotypes.b. Give the genotypes of the parents of this cross.c. Give the expected genotypic and phenotypic ratios of the progeny of this cross. Please use aPunnett square to visualize your cross. Thank you very much for your assistance as it is greatly appreciated, a like is guaranteed if all subquestions are answered.
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