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3. You've discovered an exotic species of plant that can have three unusual autosomal recessive genetic traits: abnormal roots, blue leaves (as opposed to the wildtype green leaves), and curly stem (as opposed to the wildtype straight stem). You suspect that the three genes involved are linked and decide to map them. You may find it helpful to use "a" to refer to the recessive abnormal root allele, "b" to refer to the recessive blue leaf allele, and "c" to refer to the recessive curly stem allele. First, you cross a true breeding plant with abnormal roots and curly stem (and wildtype green leaves) to a plant that is true breeding with blue leaves (and wildtype roots and stem). You then cross the offspring (i.e., the F1 generation) with a plant appropriate for mapping these genes. Among 1000 offspring of this second mating (i.e., the F2 generation) you observe: 407 plants with abnormal roots and curly stems 434 plants with blue leaves 16 wildtype plants (normal roots, normal green leaves, normal straight stem) 61 plants with curly stems 48 plants with abnormal roots and blue leaves 26 plants with abnormal roots, blue leaves, and curly stems 2 plants with blue leaves and curly stems 6 plants with abnormal roots

3. You've discovered an exotic species of plant that can have three unusual autosomal recessive genetic traits: abnormal roots, blue leaves (as opposed to the wildtype green leaves), and curly stem (as opposed to the wildtype straight stem). You suspect that the three genes involved are linked and decide to map them. You may find it helpful to use "a" to refer to the recessive abnormal root allele, "b" to refer to the recessive blue leaf allele, and "c" to refer to the recessive curly stem allele. First, you cross a true breeding plant with abnormal roots and curly stem (and wildtype green leaves) to a plant that is true breeding with blue leaves (and wildtype roots and stem). You then cross the offspring (i.e., the F1 generation) with a plant appropriate for mapping these genes. Among 1000 offspring of this second mating (i.e., the F2 generation) you observe: 407 plants with abnormal roots and curly stems 434 plants with blue leaves 16 wildtype plants (normal roots, normal green leaves, normal straight stem) 61 plants with curly stems 48 plants with abnormal roots and blue leaves 26 plants with abnormal roots, blue leaves, and curly stems 2 plants with blue leaves and curly stems 6 plants with abnormal roots

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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3. You've discovered an exotic species of plant that can have three unusual autosomal recessive genetic traits: abnormal roots, blue leaves (as opposed to the wildtype green leaves), and curly stem (as opposed to the wildtype straight stem). You suspect that the three genes involved are linked and decide to map them. You may find it helpful to use "a" to refer to the recessive abnormal root allele, "b" to refer to the recessive blue leaf allele, and "c" to refer to the recessive curly stem allele. First, you cross a true breeding plant with abnormal roots and curly stem (and wildtype green leaves) to a plant that is true breeding with blue leaves (and wildtype roots and stem). You then cross the offspring (i.e., the F1 generation) with a plant appropriate for mapping these genes. Among 1000 offspring of this second mating (i.e., the F2 generation) you observe: 407 plants with abnormal roots and curly stems 434 plants with blue leaves 16 wildtype plants (normal roots, normal green leaves, normal straight stem) 61 plants with curly stems 48 plants with abnormal roots and blue leaves 26 plants with abnormal roots, blue leaves, and curly stems 2 plants with blue leaves and curly stems 6 plants with abnormal roots
Transcribed Image Text:3. You've discovered an exotic species of plant that can have three unusual autosomal recessive genetic traits: abnormal roots, blue leaves (as opposed to the wildtype green leaves), and curly stem (as opposed to the wildtype straight stem). You suspect that the three genes involved are linked and decide to map them. You may find it helpful to use "a" to refer to the recessive abnormal root allele, "b" to refer to the recessive blue leaf allele, and "c" to refer to the recessive curly stem allele. First, you cross a true breeding plant with abnormal roots and curly stem (and wildtype green leaves) to a plant that is true breeding with blue leaves (and wildtype roots and stem). You then cross the offspring (i.e., the F1 generation) with a plant appropriate for mapping these genes. Among 1000 offspring of this second mating (i.e., the F2 generation) you observe: 407 plants with abnormal roots and curly stems 434 plants with blue leaves 16 wildtype plants (normal roots, normal green leaves, normal straight stem) 61 plants with curly stems 48 plants with abnormal roots and blue leaves 26 plants with abnormal roots, blue leaves, and curly stems 2 plants with blue leaves and curly stems 6 plants with abnormal roots
Complete the Table below: Cross-over Type i. Frequency Genotype Parentals Parentals Cross Over I Cross Over I Cross Over II Cross Over II Double Cross Over Double Cross Over ii. The distance between the first gene and middle gene is and the distance between the middle gene and the third gene is iii. The middle gene is iv. The correct gene sequence is (no spaces).
Transcribed Image Text:Complete the Table below: Cross-over Type i. Frequency Genotype Parentals Parentals Cross Over I Cross Over I Cross Over II Cross Over II Double Cross Over Double Cross Over ii. The distance between the first gene and middle gene is and the distance between the middle gene and the third gene is iii. The middle gene is iv. The correct gene sequence is (no spaces).
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