A female drosophila fly is homozygous for a null allele of the X-linked white gene. Nondisjunction...
A female drosophila fly is homozygous for a null allele of the X-linked white gene. Nondisjunction of the X chromosome occurs in meiosis I in this female fly. If this female fly mates with a red-eyed male fly, what is a possible exceptional progeny genotype?
Group of answer choices
A. Xw Y Y
B. Xw XwY
C. Xw+ Xw Y
D. Xw+ Xw+ Y
E. Xw+ Xw+ Xw
Homework Answers
Hence, the correct option is (B) XwXwY.
the sex of the offsprings can be determined by calculating the X/A ratio ( genic balance mechanism).
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A female drosophila fly is homozygous for a null allele of the
X-linked white gene. Nondisjunction...
6. The white gene in Drosophila is on the X chromosome and wº (red) is dominant...
6. The white gene in Drosophila is on the X chromosome and wº (red) is dominant over w (white). A red-eyed female is crossed with a white-eyed male. (A) What must the genotype of the male be? (B) What must the genotype of the female be if the progeny are 25% red male, 25% red female, 25% white male, 25% white female?
2. A white eyed female fly (w is a recessive allele of a gene for eye...
2. A white eyed female fly (w is a recessive allele of a gene for eye pigmentation on the X chromosome) is crossed with a red eyed male fly. a. Give the genotypes for the parental generation. b. Give the phenotypes and genotypes, and their proportions, for the F1 generation. c.Fls are crossed to one another. Give the phenotypes and genotypes, and their proportions, for the F2 generation.
please include work, show punnets squares and legends. thanks 2. A female Drosophila of unknown genotype...
please include work, show punnets squares and legends.
thanks
2. A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype (w = white eye allele is x-linked recessive, W+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?
A sex-linked gene is traditionally... Multiple Choice A. a gene that is turned on (makes protein)...
A sex-linked gene is traditionally... Multiple Choice A. a gene that is turned on (makes protein) only when the female hormone estrogen is present. B. a gene on the X chromosome that encodes traits seen only in females. C. a gene found on any chromosome; they are X-shaped when they are metaphase chromosomes. D. a gene that encodes traits seen only in females. E. a gene on the X chromosome. In fruit flies, white eyes is caused by a sex-linked...
Chapter 3 Homework i Saved Help Save & Exit Submit Example: White/Red Eye Color in Drosophila...
Chapter 3 Homework i Saved Help Save & Exit Submit Example: White/Red Eye Color in Drosophila Please choose two parent genotypes of dissimilar gender by dragging them into the parent cells at right. Then determine the expected phenotype ratio percentages and the expected genotype ratio percentages in the tables based on the selected genotypes. Part 1 of 4 x W+ y XWXW points (xW+Y (Xwn (x W x W) eBook Print (XW+ x W) (xWXW) References What is the expected...
figure 4.13 *22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed...
figure 4.13
*22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed males and white-eyed females (see Figure 4.13). What types of offspring would be produced if these red-eyed males and white-eyed females were crossed with each other? P generation White-eyed female Red-eyed male Separation of XS (90% of time) Nondisjunction of Xs (10% of time) Cametes y Fertilization F, generation Sperm XXY X"YY Red-eyed female White-eyed male |XWY Progeny resulting from separation of Xs X*X"...
Genetics: Use the information gathered in the X‑Linked Inheritance animation to answer the question. In the...
Genetics: Use the information gathered in the X‑Linked Inheritance animation to answer the question. In the animation, the rare white‑eyed males generated from offspring of true‑breeding red‑eyed females and white‑eyed males were the result of a nondisjunction of X chromosomes in the female during meiosis I. Could white‑eyed males be generated in this cross by a nondisjunction of X chromatids in the female during meiosis II? Why or why not? A. No, if a nondisjunction of X chromatids occurred in...
The inheritance of eye color in Drosophila is controlled by genes on each of the fly?s...
The inheritance of eye color in Drosophila is controlled by
genes on each of the fly?s four chromosome pairs. One eye-color
gene is on the fly?s X chromosome, so the trait is inherited in a
sex-linked manner. For this sex-linked trait, the wild-type (brick
red) allele is dominant over the mutant vermilion (bright red)
allele. A homozygous wild-type female fly is mated with a vermilion
male fly. X+ X+ * X^p Y Predict the eye colors of F1 and F2...
A white eyes female fruit fly is mated to a red eyed (wild type) male. While...
A white eyes female fruit fly is mated to a red eyed (wild type) male. While most of their progeny are as expected, occasionally a white eyed female is produced due to nondisjunction in the female. What is the likely karyotype of this white eyed daughter? (assume all fruit flies have AA as autosomes)!! (Please explain :) ) A) XX B) XXY C) XO D) XXX Y) XYY
Sex Linked inheritance: Set up your own mating between two flies but at least one parent...
Sex Linked inheritance: Set up your own mating between two flies but at least one parent must have a white allele in it, and present the Punnett square, genotype and phenotypes of both parents and the offspring of this cross. Remember to show the alleles on the X and/or Y chromosomes. W cannot be used for white and for the wild at the same time. Subscripts must be used. i.e Xw+Y x Xw+Xw 1 Xw+Y : 1 XwY : 1 Xw+Xw+ :...
6. The white gene in Drosophila is on the X chromosome and wº (red) is dominant over w (white). A red-eyed female is crossed with a white-eyed male. (A) What must the genotype of the male be? (B) What must the genotype of the female be if the progeny are 25% red male, 25% red female, 25% white male, 25% white female?
2. A white eyed female fly (w is a recessive allele of a gene for eye pigmentation on the X chromosome) is crossed with a red eyed male fly. a. Give the genotypes for the parental generation. b. Give the phenotypes and genotypes, and their proportions, for the F1 generation. c.Fls are crossed to one another. Give the phenotypes and genotypes, and their proportions, for the F2 generation.
please include work, show punnets squares and legends.
thanks
2. A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype (w = white eye allele is x-linked recessive, W+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?
Chapter 3 Homework i Saved Help Save & Exit Submit Example: White/Red Eye Color in Drosophila Please choose two parent genotypes of dissimilar gender by dragging them into the parent cells at right. Then determine the expected phenotype ratio percentages and the expected genotype ratio percentages in the tables based on the selected genotypes. Part 1 of 4 x W+ y XWXW points (xW+Y (Xwn (x W x W) eBook Print (XW+ x W) (xWXW) References What is the expected...
figure 4.13
*22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed males and white-eyed females (see Figure 4.13). What types of offspring would be produced if these red-eyed males and white-eyed females were crossed with each other? P generation White-eyed female Red-eyed male Separation of XS (90% of time) Nondisjunction of Xs (10% of time) Cametes y Fertilization F, generation Sperm XXY X"YY Red-eyed female White-eyed male |XWY Progeny resulting from separation of Xs X*X"...
The inheritance of eye color in Drosophila is controlled by
genes on each of the fly?s four chromosome pairs. One eye-color
gene is on the fly?s X chromosome, so the trait is inherited in a
sex-linked manner. For this sex-linked trait, the wild-type (brick
red) allele is dominant over the mutant vermilion (bright red)
allele. A homozygous wild-type female fly is mated with a vermilion
male fly. X+ X+ * X^p Y Predict the eye colors of F1 and F2...
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