Homework Answers
White eye = Recessive = Xw
Red eye = Dominant = XW
White eyed female = XwXw
Red eyed male = XWY
Parental cross: XwXw X XWY
F1 progeny:
XWXw = Red-eyed female (Carrier)
XwY = White-eyed male
F1 selfing: XWXw X XwY
F2 progeny:
XWXw = Red female (Carrier)
XWY = Red male
XwXw = White female
XwY = White male
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2. A white eyed female fly (w is a recessive allele of a gene for eye...
A (w-/ w-) white-eyed Drosophila female is crossed with a red-eyed male. Assuming the trait for...
A (w-/ w-) white-eyed Drosophila female is crossed with a red-eyed male. Assuming the trait for eye color is sex-linked, what are the possible phenotypes of the progeny? All red-eyed individuals Red- and white-eyed females and males Only red-eyed females and white-eyed males Both red- and white-eyed males and only white-eyed females None of these
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?
If an apterous female fruit fly with wild type (+) red eyes is crossed with a...
If an apterous female fruit fly with wild type (+) red eyes is crossed with a white eyed male with normal wild type wings, what is the resting F1 generation? Please show on a punnet square.Also what is the punnet dihybrid cross for the F2 generation. Note: the recessive white eyed allele is X-linked while the apterous (wingless) recessive allele is NOT x-linked. SO to summarize: male with recessive white eyes and with normal wild type wings and a recessive...
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
717 pts). In Drosophila, two recessive mutations delta vein (d) and rough eye (r) both map...
717 pts). In Drosophila, two recessive mutations delta vein (d) and rough eye (r) both map to chromosome 3 and are known to be 20 m.u. apart. Another recessive mutation, garnet eye color (a) has been mapped to the X chromosome. A delta veined, rough and garnet eyed- female was crossed to a wild-type male. The resulting fī females are testcrossed to delta-veined, rough and, garnet-eyed males. dng larg & ORG/ A. (6pts) Write the genotype of the Fı female...
can someone verify this? In Drosophila, alternate alleles of an X chromosome gene, white, determine red...
can someone verify this?
In Drosophila, alternate alleles of an X chromosome gene, white, determine red eyes (w') and white eyes (w). Alternate alleles of a second X chromosome gene, yellow, determine brown body ) and yellow body (). In cross series A and B, the F1 females are heterozygous for both genes, but the arrangement of alleles in the parental generation is different in each case. Study the genotypes and phenotypes of the P, F1, and F2 flies in...
EXTRA CREDIT (10 pts) 7) In Drosophila, white eye is an X-linked recessive trait and ebony...
EXTRA CREDIT (10 pts) 7) In Drosophila, white eye is an X-linked recessive trait and ebony body is an autosomal recessive trait. A homozygous white-eyed female (normal body) is crossed with a homozygous ebony male (normal, red eyes). a) What phenotypic ratio do you expect in the F1 generation? Show your work. b) What phenotypic ratio do you expect in the F2 generation? Show your work.
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D....
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D. 14 E. % G. none of the mice F. all of the mice 29. You mate 2 red mice with each other. Of the live offspring, how many would be red? 30. You mate 2 red mice with each other. Of the live offspring, how many would be black? 31. You mate a red mouse with a black mouse. Of the live offspring, how...
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 red-eyed male fly was crossed with a male whale with white eyes. The following offspring...
A red-eyed male fly was crossed with a male whale with white eyes. The following offspring were observed: 90 females with red eyes 43 males with red eyes 47 males with white eyes Which statement is most accurate? a) We have polygen legacy b) The gene shows the 3: 1 ratio in monohybrid crossing c) The red-eye gene must be attached to the X-chromosome d) The white- eye gene must be attached to the Y-chromosome e) Females can never have...
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?
717 pts). In Drosophila, two recessive mutations delta vein (d) and rough eye (r) both map to chromosome 3 and are known to be 20 m.u. apart. Another recessive mutation, garnet eye color (a) has been mapped to the X chromosome. A delta veined, rough and garnet eyed- female was crossed to a wild-type male. The resulting fī females are testcrossed to delta-veined, rough and, garnet-eyed males. dng larg & ORG/ A. (6pts) Write the genotype of the Fı female...
can someone verify this?
In Drosophila, alternate alleles of an X chromosome gene, white, determine red eyes (w') and white eyes (w). Alternate alleles of a second X chromosome gene, yellow, determine brown body ) and yellow body (). In cross series A and B, the F1 females are heterozygous for both genes, but the arrangement of alleles in the parental generation is different in each case. Study the genotypes and phenotypes of the P, F1, and F2 flies in...
EXTRA CREDIT (10 pts) 7) In Drosophila, white eye is an X-linked recessive trait and ebony body is an autosomal recessive trait. A homozygous white-eyed female (normal body) is crossed with a homozygous ebony male (normal, red eyes). a) What phenotypic ratio do you expect in the F1 generation? Show your work. b) What phenotypic ratio do you expect in the F2 generation? Show your work.
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D. 14 E. % G. none of the mice F. all of the mice 29. You mate 2 red mice with each other. Of the live offspring, how many would be red? 30. You mate 2 red mice with each other. Of the live offspring, how many would be black? 31. You mate a red mouse with a black mouse. Of the live offspring, how...
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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