Answer Choices:
A) No
B) More information is needed to determine eye color
C) Yes
Homework Answers
A cross between C and D does not show complementation. The (-) sign indicates that the genes are located on the same chromosome.
Add Answer to:
Answer Choices:
A) No
B) More information is needed to determine eye color
C) Yes
Required...
Answer Choices: A) No B) More information is needed to determine eye color C) Yes !...
Answer Choices:
A) No
B) More information is needed to determine eye color
C) Yes
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye...
Answer Choices: A) Only one of the strains has a mutation in an eye color gene....
Answer Choices:
A) Only one of the strains has a mutation in an eye color
gene.
b) Strains C and D have mutations in different genes.
C) Strains C and D have mutations in the same gene.
D) More information is needed to infer the location of
mutations.
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A–G). In each strain, the white eye trait is due to...
Answer Choices: A) A, B B) F, G C) C, D, F, G D) F Required...
Answer Choices:
A) A, B
B) F, G
C) C, D, F, G
D) F
Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye color...
Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white...
Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye color in these flies, pair-wise crosses are performed between each strain. The offspring phenotypes resulting from...
You are working with the fruit fly that generally exhibits a brick red eye color (wild-type)....
You are working with the fruit fly that generally exhibits a brick red eye color (wild-type). In one stock vial you recover an eye color mutant with brown eyes that you use to eventually derive a pure-breeding brown-eyed stock. Your friend, performing independent studies on the fruit fly, also recovers a pure breeding brown eye color mutant that is phenotypically identical to your strain. How would you go about determining if the two pure-breeding brown-eyed mutant strains represent mutations in...
In Drosophila, the autosomal recessive brown eye color mutation (b) displays interactions with both the X-linked...
In Drosophila, the autosomal recessive brown eye color mutation
(b) displays interactions with both the X-linked recessive
vermilion mutation (v) and the autosomal recessive scarlet (s)
mutation. Flies homozygous for brown and simultaneously hemizygous
or homozygous for vermilion have white eyes. Flies simultaneously
homozygous for both the brown and scarlet mutations also have white
eyes. Flies that are wildtype at all 3 loci have wildtype eye
color. Flies that are homozygous or hemizygous for the recessive
mutant at only one...
You are interested in mouse eye development and conduct a genetic screen for mutations that result...
You are interested in mouse eye development and conduct a genetic screen for mutations that result in strong eye defects. After treating a male mouse with ENU (a chemical mutagen that induces base-pair changes and small deletions), you identify four mouse mutants 1-4, each with defective eyes. You cross each of the four mutant mice with eye defects to homozygous wild type mice and examine the progeny from each cross. What type of information can you get from observing the...
studying gene silencing using the fly eye as a model. Below is a diagram showing part...
studying gene silencing using the fly eye as a model. Below is a diagram showing part of fly chromosome 3, including heterochromatin (striped region) near the centromere, euchromatin (solid region) two boundary elements, and three genes (spiky, green, and tiny). Recall that fly gene names are based off of their mutant phenotypes, so spiky LOF mutations make mutant eye cells spiky (rather than wild-type round), green LOF mutations make mutant eye cells green (rather than wild-type red), and tiny LOF...
Researchers investigating chromosome 9 of com, Zea mays, found four mutations. Interested in finding the relative...
Researchers investigating chromosome 9 of com, Zea mays, found four mutations. Interested in finding the relative locations of the four mutations, they bred two different triple mutant strains. One of the strains displayed phenotypes of male sterility (ms), white endosperm cap (wec), and brown midrib (brm). The other strain displayed the phenotypes of male sterility, white endosperm cap, and brittle stalk (bst). They crossed both mutant strains with a true breeding wild type strain to create two F, hybrids. They...
1) Consider a single germ cell with the genotype A/a;B/b undergoing meiosis. Which of the following...
1) Consider a single germ cell with the genotype A/a;B/b undergoing meiosis. Which of the following are possible genotypes for the set of four gametes resulting from meiosis of this single germ cell? (assume that there is NOT any nondisjunction) A, a, B, b Aa, Aa, Bb, Bb AB, Ab, aB, ab Ab, Ab, aB, aB aa, AA, BB, bb 2) From true-breeding stocks, a female fly with no eyes (mutation in eyeless (ey) gene) and no wings (mutation in...
Answer Choices:
A) No
B) More information is needed to determine eye color
C) Yes
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye...
Answer Choices:
A) Only one of the strains has a mutation in an eye color
gene.
b) Strains C and D have mutations in different genes.
C) Strains C and D have mutations in the same gene.
D) More information is needed to infer the location of
mutations.
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A–G). In each strain, the white eye trait is due to...
Answer Choices:
A) A, B
B) F, G
C) C, D, F, G
D) F
Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye color...
Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A-G). In each strain, the white eye trait is due to an autosomal recessive allele. It is possible all seven strains have mutations in the same gene. Alternatively, they may have mutations in different genes. To determine how many genes are involved in eye color in these flies, pair-wise crosses are performed between each strain. The offspring phenotypes resulting from...
In Drosophila, the autosomal recessive brown eye color mutation
(b) displays interactions with both the X-linked recessive
vermilion mutation (v) and the autosomal recessive scarlet (s)
mutation. Flies homozygous for brown and simultaneously hemizygous
or homozygous for vermilion have white eyes. Flies simultaneously
homozygous for both the brown and scarlet mutations also have white
eyes. Flies that are wildtype at all 3 loci have wildtype eye
color. Flies that are homozygous or hemizygous for the recessive
mutant at only one...
studying gene silencing using the fly eye as a model. Below is a diagram showing part of fly chromosome 3, including heterochromatin (striped region) near the centromere, euchromatin (solid region) two boundary elements, and three genes (spiky, green, and tiny). Recall that fly gene names are based off of their mutant phenotypes, so spiky LOF mutations make mutant eye cells spiky (rather than wild-type round), green LOF mutations make mutant eye cells green (rather than wild-type red), and tiny LOF...
Researchers investigating chromosome 9 of com, Zea mays, found four mutations. Interested in finding the relative locations of the four mutations, they bred two different triple mutant strains. One of the strains displayed phenotypes of male sterility (ms), white endosperm cap (wec), and brown midrib (brm). The other strain displayed the phenotypes of male sterility, white endosperm cap, and brittle stalk (bst). They crossed both mutant strains with a true breeding wild type strain to create two F, hybrids. They...
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