The insertion of the Doc retrotransposon is one mechanism resulting in white eyed flies. Based upon...
The insertion of the Doc retrotransposon is one mechanism resulting in white eyed flies. Based upon your knowledge of the formation of eye color in Drosophila, propose another mechanism that could result in white eyes?
Homework Answers
Production of red eye in drosophila requires two kinds of pigments. The ommochrome pathway results in the production of brown pigments, while the other pathway, the drosopterin pathway produces bright red pigment. Both of these pigments are transported to the site of eye formation by a common transport system.
The precursor of ommochrome pathway is tryptophan, and the precursor of drosopterin pathway is guanine nucleotide. Both of these precursors are transported into the site of synthesis by specific membrane transporters.
Mutations that block the transport of these pigments will result in the production of white eye color in drosophila, along with various other colors such as brown and scarlet.
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The insertion of the Doc retrotransposon is one mechanism
resulting in white eyed flies. Based upon...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference in eye color is due to inheritance of one gene. Two true-breeding flies are mated, with the female white-eyed and the male red-eyed. The F1 are 1/2 red eyed and female, and 12 white-eyed and male. (There are no white-eyed females, or red- eyed males.) 11. The F2 includes: 54 red-eye females 42 white-eyed females 48 red-eyed males 56 white-eyed males Phenotypes d (o-edd/e...
All one question 39. The followi ng is the eye pigmentation pathway in Drosophila. When all...
All one question
39. The followi ng is the eye pigmentation pathway in Drosophila. When all genes are normal oted as WT or +) dark red color es an enzyme which produces brown ommochrome pigment an enzyme which produces brown ommochrome pigment and not mutated the result in the normal (den cinnabar (c) encod scarlet (s) encodes brown (b) encodes for a protein important in bright red p white (w)encodes a protein important in pigment transport ation to the eyes...
33. (8 points) A graduate student in your laboratory has just heard of a proposal by...
33. (8 points) A graduate student in your laboratory has just heard of a proposal by another laboratory that genes for body thickness and the color of eyes may be linked in Drosophila. Your lab has numerous pure- breeding stocks of Drosophila that could be used to verify or refute genetic linkage. In Drosophila, thin body (t") is dominant to thicc body (t), and red eyes (r") are dominant to purple eyes (r). Your lab boss asks you to design...
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain...
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between a white-eyed male fruit fly, and a female that is heterozygous for red eye color? (See Chapter 8.3 Figure your e Text) 2 white-eyed females 2 red-eyed males V none of these 2 red-eyed female 1 white-eyed female: 1 red-eyed male: 2 white-eyed male 1 red-eyed female 1 white-eyed female 1 red-eyed male: 1 white-eyed male 2 red-eyed females: 2 white-eyed males Question 39...
prelab wants me to draw a mechanism for both pairs. so one mechanism for the 93-95...
prelab wants me to draw a mechanism for both pairs. so one
mechanism for the 93-95 C pair and another mechanism for the
202-204 C pair. Please draw out full mechanism with arrow pushing
please for both!
trans-cinnamic acid Bromination of trans-cinnamic acid can result in the formation of two different pairs of enantiomers (see Figure 4). Fortunately, the pairs of enantiomers have very different melting points. Thus, we can determine the result of this reaction by examining the melting...
complete. Read carefully. Make a full complete presentation of your results. Place your answer, clearly organized,...
complete. Read carefully. Make a full complete presentation of your results. Place your answer, clearly organized, on the next page A. The fly characteristics brown eye and vestigial wing are both located on the fly chromosome II and they are approximately 20 mu apart. Please draw a complete presentation of a dihybrid test cross and the expected outcome from the cross. Show your cross, if you are using coupling or repulsion, the Punnett square associated and the predicted frequencies and...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes....
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
One-year later Mrs. Prather presents to the ED complaining of dyspnea, especially at night. She states...
One-year later Mrs. Prather presents to the ED complaining of dyspnea, especially at night. She states that she sleeps better when sitting in her recliner. Review of Systems: (what patient tells you) Skin: no changes in hair, no changes with nails Mental Health: no current feelings of sadness, no sleep disturbances, no suicidal ideations Neurological: no light-headedness, no dizziness, no paresthesia to feet & hands, no balance problems Head and neck: no headache, no neck pain, no stiffness Eyes: no...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference in eye color is due to inheritance of one gene. Two true-breeding flies are mated, with the female white-eyed and the male red-eyed. The F1 are 1/2 red eyed and female, and 12 white-eyed and male. (There are no white-eyed females, or red- eyed males.) 11. The F2 includes: 54 red-eye females 42 white-eyed females 48 red-eyed males 56 white-eyed males Phenotypes d (o-edd/e...
All one question
39. The followi ng is the eye pigmentation pathway in Drosophila. When all genes are normal oted as WT or +) dark red color es an enzyme which produces brown ommochrome pigment an enzyme which produces brown ommochrome pigment and not mutated the result in the normal (den cinnabar (c) encod scarlet (s) encodes brown (b) encodes for a protein important in bright red p white (w)encodes a protein important in pigment transport ation to the eyes...
33. (8 points) A graduate student in your laboratory has just heard of a proposal by another laboratory that genes for body thickness and the color of eyes may be linked in Drosophila. Your lab has numerous pure- breeding stocks of Drosophila that could be used to verify or refute genetic linkage. In Drosophila, thin body (t") is dominant to thicc body (t), and red eyes (r") are dominant to purple eyes (r). Your lab boss asks you to design...
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between a white-eyed male fruit fly, and a female that is heterozygous for red eye color? (See Chapter 8.3 Figure your e Text) 2 white-eyed females 2 red-eyed males V none of these 2 red-eyed female 1 white-eyed female: 1 red-eyed male: 2 white-eyed male 1 red-eyed female 1 white-eyed female 1 red-eyed male: 1 white-eyed male 2 red-eyed females: 2 white-eyed males Question 39...
prelab wants me to draw a mechanism for both pairs. so one
mechanism for the 93-95 C pair and another mechanism for the
202-204 C pair. Please draw out full mechanism with arrow pushing
please for both!
trans-cinnamic acid Bromination of trans-cinnamic acid can result in the formation of two different pairs of enantiomers (see Figure 4). Fortunately, the pairs of enantiomers have very different melting points. Thus, we can determine the result of this reaction by examining the melting...
complete. Read carefully. Make a full complete presentation of your results. Place your answer, clearly organized, on the next page A. The fly characteristics brown eye and vestigial wing are both located on the fly chromosome II and they are approximately 20 mu apart. Please draw a complete presentation of a dihybrid test cross and the expected outcome from the cross. Show your cross, if you are using coupling or repulsion, the Punnett square associated and the predicted frequencies and...
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
One-year later Mrs. Prather presents to the ED complaining of dyspnea, especially at night. She states that she sleeps better when sitting in her recliner. Review of Systems: (what patient tells you) Skin: no changes in hair, no changes with nails Mental Health: no current feelings of sadness, no sleep disturbances, no suicidal ideations Neurological: no light-headedness, no dizziness, no paresthesia to feet & hands, no balance problems Head and neck: no headache, no neck pain, no stiffness Eyes: no...
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