In onions, male sterility is due to the interaction of a chromosomal allele pair hh and "sterile" (S) cytoplasm. All other combinations (i.e. HH/Hh and "sterile" cytoplasm, HH/Hh or hh "fertile" (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. If you were to perpetuate the male-sterile line, which parents should be used? S F F S hh hh HH HH A. I and II B. I and III || C. II and IV D. III and IV IV S

In onions, male sterility is due to the interaction of a chromosomal allele pair hh and "sterile" (S) cytoplasm. All other combinations (i.e. HH/Hh and "sterile" cytoplasm, HH/Hh or hh "fertile" (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. If you were to perpetuate the male-sterile line, which parents should be used? S F F S hh hh HH HH A. I and II B. I and III || C. II and IV D. III and IV IV S

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 5QP: As it turned out, one of the tallest Potsdam Guards had an unquenchable attraction to short women....

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As it turned out, one of the tallest Potsdam Guards had an unquenchable attraction to short women. During his tenure as guard, he had numerous clandestine affairs. In each case, children resulted. Subsequently, some of the childrenwho had no way of knowing that they were relatedmarried and had children of their own. Assume that two pairs of genes determine height. The genotype of the 7-foot-tall Potsdam Guard was A9A9B9B9, and the genotype of all of his 5-foot clandestine lovers was AABB. An A9 or B9 allele in the offspring each adds 6 inches to the base height of 5 feet conferred by the AABB genotype. a. What were the genotypes and phenotypes of all the F1 children? b. Diagram the cross between the F1 offspring, and give all possible genotypes and phenotypes of the F2 progeny
In onions, male sterility is due to the interaction of a chromosomal allele pair hh and “sterile” (S) cytoplasm. All other combinations (i.e. HH/Hh and “sterile” cytoplasm, HH/Hh or hh “fertile” (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. How would you perpetuate the male-sterile line? Show the cross. Briefly outline the method of producing hybrid seed (heterozygote) for the commercial crop. Show the cross. Does it matter whether the cytoplasm is fertile or sterile in the male-fertile inbred? Explain.
In flowers, purple flower color is dominant and denoted by "P" while white flower color is recessive and is denoted by "p". In a monohybrid cross between 2 heterozygous purple flowers, what is the expected phenotypic offspring ratio?
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. In corn, the allele A allows the deposition of anthocyanin (blue) pigment in the kernels (seeds), while aaplants have yellow kernels. At a second gene, W–produces smooth kernels, while ww kernels are wrinkled. A plant with blue smooth kernels was crossedto a plant with yellow wrinkled kernels. The progenyconsisted of 1447 blue smooth, 169 blue wrinkled,186 yellow smooth, and 1510 yellow wrinkled.a. Are the a and w loci linked? If so, how far apartare they?b. What was the genotype of the blue smooth parent?Include the chromosome arrangement of alleles.c. If a plant grown from a blue wrinkled progeny seedis crossed to a plant grown from a yellow smoothF1 seed, what kinds of kernels would be expected,and in what proportions?