Problem 5. The eye color of fruit flies is an X-linked trait. The red eye color is dominant and the white eye color is recessive. If a white-eyed male fly mates with a heterozygous red-eyed female fly, what will be the genotypes and phenotypes of their offspring? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Offspring- c) Phenotypes of Offspring-

Problem 5. The eye color of fruit flies is an X-linked trait. The red eye color is dominant and the white eye color is recessive. If a white-eyed male fly mates with a heterozygous red-eyed female fly, what will be the genotypes and phenotypes of their offspring? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Offspring- c) Phenotypes of Offspring-

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Description: Problem 5. The eye color of fruit flies is an X-linked trait. The red eye color is dominant and the white eye color is recessive. If a white-eyed male fly mates with a heterozygous red-eyed female fly, what will be the genotypes and phenotypes of the

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter13: Genes, Chromosomes, And Human Genetics

Section: Chapter Questions

Problem 5TYK

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Problem Solving: In Drosophila, the gene that controls red eye color (dominant) versus white eye color is on the X chromosomes. What are the expected phenotypic results if a heterozygous female is crossed with a white-eyed male? In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell (calico) coat. If a long-haired yellow male is crossed with a tortoiseshell female homozygous for short hair, what are the expected phenotypic results?
ZOOM 4) Color-blindness is caused by an X-linked recessive allele. A color-blind woman marries a man with normal color vision. What would be their children's phenotypes (in percent)? What percent of their offspring will be females with normal color vision, but who are carriers for the condition?
Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene produces long wings; a recessive allele produces vestigial (short) wings. A female that is true- breeding for red eyes and long wings is mated with a male that has purple eyes and vestigial wings. F1 females are then crossed with purple-eyed, vestigial-winged males. From this second cross, a total of 600 offspring are obtained with the following combinations of traits: 252 with red eyes and long wings 276 with purple eyes and vestigial wings 42 with red eyes and vestigial wings 30 with purple eyes and long wings Are the genes linked, unlinked, or sex-linked? If they are linked, how many map units separate them on the chromosome?
Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele? c. If a female is heterozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele?
GENETICS: X LINKED GENES In fruit flies, eye color is a sex linked trait. Red is dominant to white. What are the sexes and eye colors of flies with the following genotypes: XRXr XRY XRXR X'Y What are the genotypes of these flies: white eyed, male red eyed female (heterozygous). red eyed, male white eyed, female Show the cross of a white eyed female X'X' with a red-eyed male XRY. Show a cross between a pure red eyed female and a white eyed male. What are the genotypes of the parents: & & Show the cross of a red eyed female (heterozygous) and a red eyed male. What are the genotypes of the parents? How many are: white eyed, male_ red eyed, male How many are: white eyed, male white eyed, female red eyed, male red eyed, female white eyed, female red eyed, female
Question: The disorder: Red-Green color blindness Explain the mode of inheritance of the disorder (recessive, dominant, x-linked, etc.) . Can a person be a carrier of this disorder? • Describe the probability of having a child with the disorder -- give a specific scenario (ex. both parents are heterozygous for the trait) • Describe the symptoms associated with this disorder Explain the prognosis of a person born with this disorder
1- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? 2- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? Use the information below to answer questions 3-6 There may be a number of possible alleles for a given gene within a population. In a multiple allele system the dominance relationships between the various alleles must be considered. One of the more familiar examples of a multiple allelic system is that of the human ABO blood group. The gene…
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Dihybrid Cross Problem 2: When does a phenotype ratio of 9:3:3:1 occur? A phenotype ratio of 9:3:3:1 in the offspring of a mating of two organisms heterozygous for two traits is expected when: A. the genes reside on the same chromosome B. each gene contains two mutations C. the gene pairs assort independently during meiosis D. only recessive traits are scored E. none of the above
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166. In Drosophila crossing over occurs in female but not in male. Gene A and B are 10 map unit apart on chromosome. A female Drosophila with genotype AB/ab and male Drosophila with genotype AB/ab. How many type of gametes are produced by female and male Drosophila respectively (1) 4 types : 2 types (2) 2 types : 2 types (3) 4 types : 4 types (4) 4 types : one types
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