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data was obtained: F1 offspring P cross Checkered Plain )checkered x checkered (b) checkered x plain (c) plain x plain 36 38 35 Then F1 offspring were selectively mated with the following results. F2 offspring F1 cross Checkered Plain d) checkered (a) x plain (c) e) checkered (b) x plain (c) ) checkered (b) x checkered (b) g) checkered (a) x checkered 34 0. 17 14 6. 39 (h) 28

data was obtained: F1 offspring P cross Checkered Plain )checkered x checkered (b) checkered x plain (c) plain x plain 36 38 35 Then F1 offspring were selectively mated with the following results. F2 offspring F1 cross Checkered Plain d) checkered (a) x plain (c) e) checkered (b) x plain (c) ) checkered (b) x checkered (b) g) checkered (a) x checkered 34 0. 17 14 6. 39 (h) 28

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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**Study of Pigeon Feather Patterns: Checkered and Plain** In a genetic study on pigeons, researchers investigated the inheritance of checkered and plain feather patterns through a series of test crosses. The initial data obtained from parental (P) crosses and their first generation (F1) offspring are summarized in the table below: ### Table 1: P Cross and F1 Offspring | P Cross | Checkered | Plain | |--------------------------------|-----------|-------| | (a) Checkered x Checkered | 36 | 0 | | (b) Checkered x Plain | 38 | 0 | | (c) Plain x Plain | 0 | 35 | The data shows the following: - Cross (a) involved two checkered pigeons, resulting in 36 checkered offspring and no plain offspring. - Cross (b) involved a checkered pigeon with a plain pigeon, resulting in 38 checkered offspring and no plain offspring. - Cross (c) involved two plain pigeons, resulting in 35 plain offspring and no checkered offspring. ### F1 Selective Mating Results: Further selective mating among F1 offspring produced the following results in the subsequent generation (F2): ### Table 2: F1 Cross and F2 Offspring | F1 Cross | Checkered | Plain | |------------------------------------------|-----------|-------| | (d) Checkered (a) x Plain (c) | 34 | 0 | | (e) Checkered (b) x Plain (c) | 17 | 14 | | (f) Checkered (b) x Checkered (b) | 28 | 9 | | (g) Checkered (a) x Checkered (b) | 39 | 0 | - Cross (d) resulted in 34 checkered offspring and no plain offspring. - Cross (e) showed a mix, with 17 checkered offspring and 14 plain offspring. - Cross (f) had 28 checkered and 9 plain offspring. - Cross (g) resulted in 39 checkered offspring and no plain offspring. This study illustrates the genetic patterns in the inheritance of feather colors in pigeons, demonstrating the potential dominance and recession of traits when different patterns are crossed.
Transcribed Image Text:**Study of Pigeon Feather Patterns: Checkered and Plain** In a genetic study on pigeons, researchers investigated the inheritance of checkered and plain feather patterns through a series of test crosses. The initial data obtained from parental (P) crosses and their first generation (F1) offspring are summarized in the table below: ### Table 1: P Cross and F1 Offspring | P Cross | Checkered | Plain | |--------------------------------|-----------|-------| | (a) Checkered x Checkered | 36 | 0 | | (b) Checkered x Plain | 38 | 0 | | (c) Plain x Plain | 0 | 35 | The data shows the following: - Cross (a) involved two checkered pigeons, resulting in 36 checkered offspring and no plain offspring. - Cross (b) involved a checkered pigeon with a plain pigeon, resulting in 38 checkered offspring and no plain offspring. - Cross (c) involved two plain pigeons, resulting in 35 plain offspring and no checkered offspring. ### F1 Selective Mating Results: Further selective mating among F1 offspring produced the following results in the subsequent generation (F2): ### Table 2: F1 Cross and F2 Offspring | F1 Cross | Checkered | Plain | |------------------------------------------|-----------|-------| | (d) Checkered (a) x Plain (c) | 34 | 0 | | (e) Checkered (b) x Plain (c) | 17 | 14 | | (f) Checkered (b) x Checkered (b) | 28 | 9 | | (g) Checkered (a) x Checkered (b) | 39 | 0 | - Cross (d) resulted in 34 checkered offspring and no plain offspring. - Cross (e) showed a mix, with 17 checkered offspring and 14 plain offspring. - Cross (f) had 28 checkered and 9 plain offspring. - Cross (g) resulted in 39 checkered offspring and no plain offspring. This study illustrates the genetic patterns in the inheritance of feather colors in pigeons, demonstrating the potential dominance and recession of traits when different patterns are crossed.
a. For P cross (a), give the genotypes of the parents. Give the genotypes of the F1 offspring. b. For P cross (b), give the genotypes of the parents. Give the genotypes of the F1 offspring. c. For P cross (c), give the genotypes of the parents. Give the genotypes of the F1 offspring. d. For F1 cross (d), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. e. For the F1 cross (e), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. f. For the F1 cross (f), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. g. For the F1 cross (g), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring.
Transcribed Image Text:a. For P cross (a), give the genotypes of the parents. Give the genotypes of the F1 offspring. b. For P cross (b), give the genotypes of the parents. Give the genotypes of the F1 offspring. c. For P cross (c), give the genotypes of the parents. Give the genotypes of the F1 offspring. d. For F1 cross (d), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. e. For the F1 cross (e), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. f. For the F1 cross (f), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring. g. For the F1 cross (g), give the genotypes of the parents. Give the genotypes and their ratios for the F2 offspring.
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