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A Drosophila mutation called singed (s) causes the bristles to be bent and misshapen. A mutation called purple (p) causes the fly's eyes to be purple in color instead of the normal red. Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes. The F, were intercrossed to produce the F2, and the following results were obtained. Cross male, singed bristles, purple eyes x female, normal bristles, red eyes F1 420 female, normal bristles, red eyes 426 male, normal bristles, red eyes F2 337 female, normal bristles, red eyes 113 female, normal bristles, purple eyes 168 male, normal bristles, red eyes 170 male, singed bristles, red eyes 56 male, normal bristles, purple eyes 58 male, singed bristles, purple eyes Cross female, singed bristles, purple eyes x male, normal bristles, red eyes F1 504 female, normal bristles, red eyes 498 male, singed bristles, red eyes F2 227 female, normal bristles, red eyes 223 female, singed bristles, red eyes 225 male, normal bristles, red eyes 225 male, singed bristles, red eyes 78 female, normal bristles, purple eyes 76 female, singed bristles, purple eyes 74 male, normal bristles, purple eyes 72 male, singed bristles, purple eyes

A Drosophila mutation called singed (s) causes the bristles to be bent and misshapen. A mutation called purple (p) causes the fly's eyes to be purple in color instead of the normal red. Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes. The F, were intercrossed to produce the F2, and the following results were obtained. Cross male, singed bristles, purple eyes x female, normal bristles, red eyes F1 420 female, normal bristles, red eyes 426 male, normal bristles, red eyes F2 337 female, normal bristles, red eyes 113 female, normal bristles, purple eyes 168 male, normal bristles, red eyes 170 male, singed bristles, red eyes 56 male, normal bristles, purple eyes 58 male, singed bristles, purple eyes Cross female, singed bristles, purple eyes x male, normal bristles, red eyes F1 504 female, normal bristles, red eyes 498 male, singed bristles, red eyes F2 227 female, normal bristles, red eyes 223 female, singed bristles, red eyes 225 male, normal bristles, red eyes 225 male, singed bristles, red eyes 78 female, normal bristles, purple eyes 76 female, singed bristles, purple eyes 74 male, normal bristles, purple eyes 72 male, singed bristles, purple eyes

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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What are the modes of inheritance of singed and purple? Explain your reasoning.

A Drosophila mutation called singed (s) causes the bristles to be bent and misshapen. A mutation called purple (p) causes the fly's eyes to be purple in color instead of the normal red. Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes. The F, were intercrossed to produce the F2, and the following results were obtained. Cross male, singed bristles, purple eyes x female, normal bristles, red eyes F1 420 female, normal bristles, red eyes 426 male, normal bristles, red eyes F2 337 female, normal bristles, red eyes 113 female, normal bristles, purple eyes 168 male, normal bristles, red eyes 170 male, singed bristles, red eyes 56 male, normal bristles, purple eyes 58 male, singed bristles, purple eyes
Transcribed Image Text:A Drosophila mutation called singed (s) causes the bristles to be bent and misshapen. A mutation called purple (p) causes the fly's eyes to be purple in color instead of the normal red. Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes. The F, were intercrossed to produce the F2, and the following results were obtained. Cross male, singed bristles, purple eyes x female, normal bristles, red eyes F1 420 female, normal bristles, red eyes 426 male, normal bristles, red eyes F2 337 female, normal bristles, red eyes 113 female, normal bristles, purple eyes 168 male, normal bristles, red eyes 170 male, singed bristles, red eyes 56 male, normal bristles, purple eyes 58 male, singed bristles, purple eyes
Cross female, singed bristles, purple eyes x male, normal bristles, red eyes F1 504 female, normal bristles, red eyes 498 male, singed bristles, red eyes F2 227 female, normal bristles, red eyes 223 female, singed bristles, red eyes 225 male, normal bristles, red eyes 225 male, singed bristles, red eyes 78 female, normal bristles, purple eyes 76 female, singed bristles, purple eyes 74 male, normal bristles, purple eyes 72 male, singed bristles, purple eyes
Transcribed Image Text:Cross female, singed bristles, purple eyes x male, normal bristles, red eyes F1 504 female, normal bristles, red eyes 498 male, singed bristles, red eyes F2 227 female, normal bristles, red eyes 223 female, singed bristles, red eyes 225 male, normal bristles, red eyes 225 male, singed bristles, red eyes 78 female, normal bristles, purple eyes 76 female, singed bristles, purple eyes 74 male, normal bristles, purple eyes 72 male, singed bristles, purple eyes
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