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A gene on the X chromosome in chickens controls the rate of feather production. The allele for slow feather production, B, is dominant to the allele for rapid feather production, b. Crosses carried out by a farmer are shown in Figure 1 below. Figure 1 Key Male chickens are XX Female chickens are XY Male - rapid feather production Male - slow feather production Female - rapid feather production Female - slow feather 1 2 production 7 10 11 12 13 From the figure above provide one piece of evidence that shows that a recessive allele is responsible for rapid feather production. a) b) Provide all the likely genotypes of chicken 5 and chicken 7 in Figure 1 above. A cross between two chickens produced four offspring. This resulted in two of these being males with rapid feather production and two being females with slow feather production. Provide the possible genotypes of the parents. c)

A gene on the X chromosome in chickens controls the rate of feather production. The allele for slow feather production, B, is dominant to the allele for rapid feather production, b. Crosses carried out by a farmer are shown in Figure 1 below. Figure 1 Key Male chickens are XX Female chickens are XY Male - rapid feather production Male - slow feather production Female - rapid feather production Female - slow feather 1 2 production 7 10 11 12 13 From the figure above provide one piece of evidence that shows that a recessive allele is responsible for rapid feather production. a) b) Provide all the likely genotypes of chicken 5 and chicken 7 in Figure 1 above. A cross between two chickens produced four offspring. This resulted in two of these being males with rapid feather production and two being females with slow feather production. Provide the possible genotypes of the parents. c)

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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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A gene on the X chromosome in chickens controls the rate of feather production. The allele for slow feather production, B, is dominant to the allele for rapid feather production, b. Crosses carried out by a farmer are shown in Figure 1 below. Figure 1 Key Male chickens are XX Female chickens are XY Male - rapid feather production Male - slow feather production Female - rapid feather production Female - slow feather 1 2 production 7 10 11 12 13 From the figure above provide one piece of evidence that shows that a recessive allele is responsible for rapid feather production. a) b) Provide all the likely genotypes of chicken 5 and chicken 7 in Figure 1 above. A cross between two chickens produced four offspring. This resulted in two of these being males with rapid feather production and two being females with slow feather production. Provide the possible genotypes of the parents. c)
Transcribed Image Text:A gene on the X chromosome in chickens controls the rate of feather production. The allele for slow feather production, B, is dominant to the allele for rapid feather production, b. Crosses carried out by a farmer are shown in Figure 1 below. Figure 1 Key Male chickens are XX Female chickens are XY Male - rapid feather production Male - slow feather production Female - rapid feather production Female - slow feather 1 2 production 7 10 11 12 13 From the figure above provide one piece of evidence that shows that a recessive allele is responsible for rapid feather production. a) b) Provide all the likely genotypes of chicken 5 and chicken 7 in Figure 1 above. A cross between two chickens produced four offspring. This resulted in two of these being males with rapid feather production and two being females with slow feather production. Provide the possible genotypes of the parents. c)
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