In Drosophila Melanogaster, when and how was the carnation (car) gene discovered?
In Drosophila Melanogaster, when and how was the carnation (car) gene discovered?
Homework Answers
VPS33B protein is a homologue of yeast class C vacuolar protein sorting protein Vps33p that is involved in the biogenesis function of vackules. Mutation in Vps33p homologue result in different phenotype for example mutation Drosophila melanogaster car gene causes the carnation eye colour mutant. Thus in Drosophil, a hypomorphic allele of the Vps33 homologue carnation causes the carnation eye colour phenotype. The car gene product localizez to endosomel compartments and is a homolog of SM regulators of membrane fusion.
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In Drosophila Melanogaster, when and how was the carnation (car)
gene discovered?
What is the expected phenotype when one of the following mutations occurs, either in Drosophila melanogaster...
What is the expected phenotype when one of the following mutations occurs, either in Drosophila melanogaster or in Arabidopsis thaliana? (i) Overexpression of both bicoid and nanos in a female fly. (ii) Overexpression of the homeotic gene, antennapedia, in a female fly lacking hunchback. (iii) Deletion of the pair-rule gene, even-skipped, in a male fly overexpressing nanos. (iv) Overexpression of the Class A gene, APETALA1, in a plant lacking the Class B gene, APETALA3. (v) Overexpression of the Class C...
Miniature wings in Drosophila melanogaster result from an X-linked gene (Xm) that is recessive to an...
Miniature wings in Drosophila melanogaster result from an X-linked gene (Xm) that is recessive to an allele for long wings (X+). Sepia eyes (s) are produced by an autosomal gene that is recessive to an allele for red eyes (s+). A female fly that is true-breeding for long wings and sepia eyes is crossed with a male that is true-breeding for miniature wings and red eyes. The F1 are intercrossed to produce the F2. 1) What are the expected genotypic...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl)...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl) controls somatic sexual development. i. Describe the regulatory mechanism that leads to the presence of Sxl protein only in female early embryos. [4 marks] ii. Explain how this difference is maintained later in the life cycle [6 marks] b) List two RNA modifications present in eukaryotes. Describe in detail the function of one of these RNA modifications in a living cell. [6 marks] c)...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl)...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl) controls somatic sexual development. i. Describe the regulatory mechanism that leads to the presence of Sxl protein only in female early embryos. [4 marks] ii. Explain how this difference is maintained later in the life cycle [6 marks] b) List two RNA modifications present in eukaryotes. Describe in detail the function of one of these RNA modifications in a living cell. [6 marks] c)...
How do you fill in the boxes? 7.1: Dihybrid Cross in Drosophila melanogaster In this exercise...
How do you fill in the boxes?
7.1: Dihybrid Cross in Drosophila melanogaster In this exercise we will be focusing on two genes, one of which controls wing development (ap - apterous and the other controlling body coloration (eb - ebony). Each of these genes has two alleles, where the dominant allele of each produces the wild-type phenotype for their respective trait. When expressed in the homozygous recessive genotype, the recessive allele (ap) for the apterous gene results in a...
For Drosophila Melanogaster how to determine whether the loci are assorting independently (lets say we are...
For Drosophila Melanogaster how to determine whether the loci are assorting independently (lets say we are talking about two traits, ebony body and curved wing) Would you have to perform a Chi-square testing for it?
Why is it important for Drosophila Melanogaster to follow a typical Mendelian cross?
Why is it important for Drosophila Melanogaster to follow a typical Mendelian cross?
For Drosophila Melanogaster, how to determine whether each locus is autosomal or X-linked (if assuming two...
For Drosophila Melanogaster, how to determine whether each locus is autosomal or X-linked (if assuming two traits, say eyeless and ebony body) What cross could you perform to determine it and why?
Below is a map of the Drosophila melanogaster X chromosome, giving the distances between adjacent genes...
Below is a map of the Drosophila melanogaster X
chromosome, giving the distances between adjacent genes in cM.
Suppose that a female is heterozygous for an inversion of the
exact entire region from v to wy.
She is also heterozygous for all the genes shown in the map, and
is test-crossed.
What percentage of her progeny will be recombinants between the
following gene pairs?
a) wy and g ___________
b) v and g _____________
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes...
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes and is recessive to the wildtype red eye color (v+). An allele y of the yellow gene, gives flies a yellow body color compared to the dominant brown body color (yt). A heterozygous females for the two different mutations is test-crossed with mutant (i.e., homozygous recessive) males. The phenotypes of the progeny of this cross and their corresponding numbers are given below Yellow body,...
How do you fill in the boxes?
7.1: Dihybrid Cross in Drosophila melanogaster In this exercise we will be focusing on two genes, one of which controls wing development (ap - apterous and the other controlling body coloration (eb - ebony). Each of these genes has two alleles, where the dominant allele of each produces the wild-type phenotype for their respective trait. When expressed in the homozygous recessive genotype, the recessive allele (ap) for the apterous gene results in a...
Below is a map of the Drosophila melanogaster X
chromosome, giving the distances between adjacent genes in cM.
Suppose that a female is heterozygous for an inversion of the
exact entire region from v to wy.
She is also heterozygous for all the genes shown in the map, and
is test-crossed.
What percentage of her progeny will be recombinants between the
following gene pairs?
a) wy and g ___________
b) v and g _____________
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes and is recessive to the wildtype red eye color (v+). An allele y of the yellow gene, gives flies a yellow body color compared to the dominant brown body color (yt). A heterozygous females for the two different mutations is test-crossed with mutant (i.e., homozygous recessive) males. The phenotypes of the progeny of this cross and their corresponding numbers are given below Yellow body,...
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