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Modern maize is derived from teosinte, a weedy plant that grows in South and Central America. A key difference between the two is that teosinte is a bushy plant, while maize grows upward. The tb1 gene has been implicated in this difference, and the amount of genetic diversity around this gene are lower than other parts of the genome. It takes 300 bp for diversity to recover around the selected site in tb1 to 50% of the genome-wide average, and the recombination rate in maize is Cpp = 4 x 10-7 per basepair. A. What is the time (in years) since the beneficial mutation within tb1 occurred? (Assume 1 generation per year because maize is an annual plant.) B. The effective population size of maize is N = 106. What is the selection coefficient (s) of the beneficial mutation in tb1?

Modern maize is derived from teosinte, a weedy plant that grows in South and Central America. A key difference between the two is that teosinte is a bushy plant, while maize grows upward. The tb1 gene has been implicated in this difference, and the amount of genetic diversity around this gene are lower than other parts of the genome. It takes 300 bp for diversity to recover around the selected site in tb1 to 50% of the genome-wide average, and the recombination rate in maize is Cpp = 4 x 10-7 per basepair. A. What is the time (in years) since the beneficial mutation within tb1 occurred? (Assume 1 generation per year because maize is an annual plant.) B. The effective population size of maize is N = 106. What is the selection coefficient (s) of the beneficial mutation in tb1?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Modern maize is derived from teosinte, a weedy plant that grows in South and Central America. A key difference between the two is that teosinte is a bushy plant, while maize grows upward. The tb1 gene has been implicated in this difference, and the amount of genetic diversity around this gene are lower than other parts of the genome. It takes 300 bp for diversity to recover around the selected site in tb 1 to 50% of the genome-wide average, and the recombination rate in maize is Cpp = 4 x 10-7 per basepair. A. What is the time (in years) since the beneficial mutation within tb1 occurred? (Assume 1 generation per year because maize is an annual plant.) B. The effective population size of maize is N = 106. What is the selection coefficient (s) of the beneficial mutation in tb1?
Transcribed Image Text:Modern maize is derived from teosinte, a weedy plant that grows in South and Central America. A key difference between the two is that teosinte is a bushy plant, while maize grows upward. The tb1 gene has been implicated in this difference, and the amount of genetic diversity around this gene are lower than other parts of the genome. It takes 300 bp for diversity to recover around the selected site in tb 1 to 50% of the genome-wide average, and the recombination rate in maize is Cpp = 4 x 10-7 per basepair. A. What is the time (in years) since the beneficial mutation within tb1 occurred? (Assume 1 generation per year because maize is an annual plant.) B. The effective population size of maize is N = 106. What is the selection coefficient (s) of the beneficial mutation in tb1?
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