Homework Answers
If boundary element is deleted then heterochromatin may exten to gene region as well so it may cause either eyes to be spiky , spiky green if it spreads to larger extent .
So phenotype would be : spiky , red and normal size
Spiky , green and normal size .
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studying gene silencing using the fly eye as a model. Below is a diagram showing part...
produce random mutations in the line with boundary element 1 deleted and see that in one...
produce random mutations in the line with boundary element 1 deleted and see that in one of mutant lines, all of the cells are wild-type. Which of the following mutations could have caused this phenotype? Select all correct answers, there may be multiple. Establishment of a new boundary element in between the centromere and the spiky gene Loss of function mutation of HP1, which is a protein required for heterochromatin spreading Loss of function mutation of a histone acetyltransferase, which...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal bristle (b+) to a male fly with wild type eye shape (a+) with shaven bristles (b). Both of these genes are located on Mate a female fly with mutant traits of a black body (c), bristle (b), and wing veins (v) to a wild- type male (normal body color (c+), bristle (b+), and wing size (v+)]. These three alleles are located on chromosome II...
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...
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...
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...
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...
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) 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
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 Genetics lab, you decide to further investigate Drosophila eye color. In addition to studying the...
In Genetics lab, you decide to further investigate Drosophila eye color. In addition to studying the sepia gene (se), you decide to study the gene mahogany eyes (mo). Flies that are mo-/mo- have brown eyes. You wonder if a fly that is a double mutant for sepia and mahogany eyes would have very dark brown (almost black) eyes. Because se and mo are both on the third chromosome, you have to do a recombination. You look through a former labmate’s...
. . Please provide an explanation foreach part, and I will give a like. Thank you!!!...
.
.
Please provide an explanation foreach part, and I will
give a like. Thank you!!!
1) Researchers cross parental fruit flies with mutations in an eye color gene (either normal Red or mutant Bone) and a body bristle gene (either normal Wild-type or mutant Broken-Bristle). All of the first generation of flies had unbroken bristles and Red eyes. They mated the F1 flies to a fly that was Bone and Broken-Bristle (a test-cross). They examined the phenotypes of the...
produce random mutations in the line with boundary element 1 deleted and see that in one of mutant lines, all of the cells are wild-type. Which of the following mutations could have caused this phenotype? Select all correct answers, there may be multiple. Establishment of a new boundary element in between the centromere and the spiky gene Loss of function mutation of HP1, which is a protein required for heterochromatin spreading Loss of function mutation of a histone acetyltransferase, which...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal bristle (b+) to a male fly with wild type eye shape (a+) with shaven bristles (b). Both of these genes are located on Mate a female fly with mutant traits of a black body (c), bristle (b), and wing veins (v) to a wild- type male (normal body color (c+), bristle (b+), and wing size (v+)]. These three alleles are located on chromosome II...
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...
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...
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...
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) 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 color...
.
.
Please provide an explanation foreach part, and I will
give a like. Thank you!!!
1) Researchers cross parental fruit flies with mutations in an eye color gene (either normal Red or mutant Bone) and a body bristle gene (either normal Wild-type or mutant Broken-Bristle). All of the first generation of flies had unbroken bristles and Red eyes. They mated the F1 flies to a fly that was Bone and Broken-Bristle (a test-cross). They examined the phenotypes of the...
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