2. In a certain rose variety, thorny stems ( 1) are recessive to smooth stems (T) and having white flowers () is recessive to having red flowers (R). The genes for stem thorns and flower color are located on the same chromosome. A rose homozygous for thorny stems and red flowers is crossed with a plant homozygous for smooth stems and white flowers. The F1 progeny are then crossed with plants that have thorny stems and white flowers (a testcross) to produce F2 progeny. The F2 progeny of this testcross are: thorny stems, red flowers thorny stems, white flowers smooth stems, red flowers smooth stems, white flowers 256 28 31 249 2a. What phenotypic proportions would be expected if the genes for thorny stems and flower color were located on different chromosomes? 2b. What is the percent recombination between the genes for thorny stems and flower color?
2. In a certain rose variety, thorny stems ( 1) are recessive to smooth stems (T) and having white flowers () is recessive to having red flowers (R). The genes for stem thorns and flower color are located on the same chromosome. A rose homozygous for thorny stems and red flowers is crossed with a plant homozygous for smooth stems and white flowers. The F1 progeny are then crossed with plants that have thorny stems and white flowers (a testcross) to produce F2 progeny. The F2 progeny of this testcross are: thorny stems, red flowers thorny stems, white flowers smooth stems, red flowers smooth stems, white flowers 256 28 31 249 2a. What phenotypic proportions would be expected if the genes for thorny stems and flower color were located on different chromosomes? 2b. What is the percent recombination between the genes for thorny stems and flower color?
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter12: Mendel, Genes, And Inheritance
Section: Chapter Questions
Problem 6TYK
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