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2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype wild-type ebony ebony, scarlet ebony, spineless ebony, scarlet, spineless scarlet Number 134 16 136 694 156 736 scarlet, spineless spineless (a) (b) 20 108 What indicates that the genes are linked? What was the genotype of What is the order of the genes? original heterozygous females?

2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype wild-type ebony ebony, scarlet ebony, spineless ebony, scarlet, spineless scarlet Number 134 16 136 694 156 736 scarlet, spineless spineless (a) (b) 20 108 What indicates that the genes are linked? What was the genotype of What is the order of the genes? original heterozygous females?

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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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genetics, pleaseeee solve parts a, b and c

1-If two loci are 30 cM apart, what proportion of the cells in prophase of the first meiotic division will contain a single crossover in the region between them? Explain your answer 2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Number Phenotype wild-type ebony ebony, scarlet ebony, spineless ebony, scarlet, spineless 134 16 136 694 156 scarlet 736 scarlet, spineless spineless (a) (b) (c) (d) 20 108 What indicates that the genes are linked? What was the genotype of the original heterozygous females? What is the order of the genes? What is the map distance between e and st? Between e and ss? 1 mark? 1 mark (f) (g) (h) What is the coefficient of coincidence? Calculate the interference? : Diagram the crosses in this experiment.
Transcribed Image Text:1-If two loci are 30 cM apart, what proportion of the cells in prophase of the first meiotic division will contain a single crossover in the region between them? Explain your answer 2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Number Phenotype wild-type ebony ebony, scarlet ebony, spineless ebony, scarlet, spineless 134 16 136 694 156 scarlet 736 scarlet, spineless spineless (a) (b) (c) (d) 20 108 What indicates that the genes are linked? What was the genotype of the original heterozygous females? What is the order of the genes? What is the map distance between e and st? Between e and ss? 1 mark? 1 mark (f) (g) (h) What is the coefficient of coincidence? Calculate the interference? : Diagram the crosses in this experiment.
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