Describe the following mutations in a fruit fly: Dumpy: Curly: Apterous: Ebony: Vestigial: Antennapedia: White eye: Bar eye: Vermillion eye: Lobe eye: Sepia eye:
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- Describe the following mutations in a fruit fly:
- Dumpy:
- Curly:
- Apterous:
- Ebony:
- Vestigial:
- Antennapedia:
- White eye:
- Bar eye:
- Vermillion eye:
- Lobe eye:
- Sepia eye:
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- Why do some fruit flies have white eyes?In fruit flies, normal wings (A) are dominant to dumpy wings (a) and the presence of eyes (B) is dominant to the absence of eyes (b). Creat a dihybrid cross. what is the phenotype of each flyA GWAS is done comparing squirrels with spots to those without. Answer the following questions about the plot shown. (A) What type of plot is shown? (B) What does each dot represent? (C) How are the dots arranged along the X and Y axis? (in other words, what determines where a dot is placed on the graph?) -log10(pvalue) 25- 20- 15- 10- 5- 0 -10 5 10
- Vestigial wings Trait Wild-type Yellow Body White-eyes Eyeless Body Colour Gray Yellow Eye Colour Red Eye white Eyes absent Eyes absent Eye shape Normal Normal, Extends past tip of Small, Club- Wing shape and size shaped abdomen Antenna shape and size Normal Tan stripes at the end White end with Bristle shape and size stipes very unclear. Discuss the changes in chromosomes that contribute to the mutations tabulated in Table aboveCertain genes determine sex, fertility, and viability in Drosophila, and mutations in these genes affect the two sexes differently. Classify the descriptions below based on their occurrence in XY or XX flies. Some descriptions may be used in both categories. The expressed form of Dsx activates maleness genes and represses femaleness genes. XY XX Null mutations in the dsx gene result in an intersex phenotype. Loss-of-function mutations in the tra gene have no effect on phenotype. Sxl is expressed in early embryogenesis from the establishment promoter. Flies that produce Fru-M in brain cells from a transgene perform a mating dance and specifically court females. Loss-of-function mutations in the fru gene result in flies who court both males and females. Sxl regulates splicing of its own RNA to produce a functional protein. The expressed form of Dsx activates femaleness genes and represses maleness genes. Loss-of-function mutations in the Sxl gene have no effect on phenotype. ResetLabel the following diagram:
- Which of the following sets of genes are most likely to have pleiotropic effects? Transcription factor genes Metabolic pathway genes Pigmentation genes Circadian rhythm genesLabel the following pictureWhat similarities do the illustrations have? What are the differences? What trends do you see from stage 1 to stage 3?
- Create a Concept Map for the following:Consider a Droscophilia fly with a genotype of Nn XqYY. The dominant allele of the sex-linked gene specifies a black body and the recessive a white body. The recessive autosomal allele specifies hairy bristles while the dominant allele specifies smooth bristles. i)What is the ploidy of this fly? ii) What would the sex of this fly be? iii)What would the phenotype of this fly be with respect to these two loci?Briefly describe the reciprocal signal transduction pathways that establish parasegmental boundaries in fly embryos.