Biol 121 Worksheet - Genetic Crosses Tomatoes 1. In tomatoes, yellow flowers (F) are dominant to white flowers (f) and thick stems (T) are dominant to thin stems (t). Pollen from a tomato with thick stems and white flowers pollinates a tomato with thin stems and yellow flowers. The F1 all have thick stems and yellow flowers. a) When you perform a testcross on the F1s, if the genes segregate independently, what phenotypes do you expect and in what ratio do you expect these phenotypes to occur? Show all your work.

Biol 121 Worksheet - Genetic Crosses Tomatoes 1. In tomatoes, yellow flowers (F) are dominant to white flowers (f) and thick stems (T) are dominant to thin stems (t). Pollen from a tomato with thick stems and white flowers pollinates a tomato with thin stems and yellow flowers. The F1 all have thick stems and yellow flowers. a) When you perform a testcross on the F1s, if the genes segregate independently, what phenotypes do you expect and in what ratio do you expect these phenotypes to occur? Show all your work.

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

Chapter17: Bacterial And Viral Genetics

Section: Chapter Questions

Problem 12TYK: Discuss Concepts As a control for their experiments with bacterial recombination, Lederberg and...

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Need help. Knowing that the Curly leaf (Cy) is a dominant gene on chromosome 6, as it is useful in tracking other genes using trisomics for chromosome 6. Assume a Cy Cy cy plant used as a pollen parent where disomic pollen does not function crossed to a Cy cy cy female where disomic eggs do function. A) What ratio would be predicted in the progeny of this cross? B) What if the reciprocal cross was made?
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Gene mapping using the Three-point Testcross a) Given the following alleles that control seed traits:W = wrinkled G = green R = roundw = smooth g = yellow r = oval b) Results of a cross with a triple heterozygote revealed the following phenotypes:30 smooth yellow round4 smooth green round958 wrinkled green round2 wrinkled yellow oval18 wrinkled yellow round946 smooth yellow oval16 smooth green oval26 wrinkled green oval c) Determine the order of the genes and the distance between them in centiMorgan (cM).Construct a gene map to show your results. TIP: Based on the phenotypes, determine the alleles in the gametes
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