What is the most likely method by which a gene produces red eyes in fruit flies?the gene codes for an enzyme that changes a colorless chemical into a redchemical in the cells of the eyethe gene codes for an enzyme that is reda mutation changes the coding sequence of the gene so that it codes for a redprotein instead of a white proteinthe gene codes for a chemical that is red in color

Answer is C. Mutation changes the coding sequence of the genes so that it codes for red protein…

Answered: What is the most likely method by which…

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What is the most likely method by which a gene produces red eyes in fruit flies?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter11: Genome Alterations: Mutation And Epigenetics

Section: Chapter Questions

Problem 10QP: If the coding region of a gene (the exons) contains 2,100 base pairs of DNA, would a missense...

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Which type of mutation is simulated in the following example? Wild type: THE ONE BIG FLY HAD ONE RED EYE Mutant: THE ONE BIH ADF LYO NER EDE YE
You conduct an experiment to study the expression of the S protein through the tissues of your favorite plant (Arabidopsis thaliana). The morning of the experiment you inject in the leaves a messenger RNA that codes for the synthesis of a single protein made of two parts that are attached to each other: the functional S protein and a red fluorescent protein tag (RFP). You perform two cross sections of the same root, one section at the start of the experiment (time = Oh; corresponding to the time of injection) and one section in the afternoon (time = 8h). Through fluorescent microscopy you observe a change in the coloration inside the cells of the root's central tissues (as indicated by the arrows): from no coloration (time = Oh) to red (time = 8h). • The cells of the central tissues in the roots do not have nuclei or ribosomes. How can you explain this change of coloration? Please provide a cellular feature that can lead to this. • What is one advantage of using an RFP-tag in an mRNA?…
Which type of mutation is simulated in the following example? Wild type: THE ONE BIG FLY HAD ONE RED EYE Mutant: THE ONE BUG FLY HAD ONE RED EYE
The following is a difference between eukaryotic and prokaryotic gene regulation: O Only prokaryotes have operons O Only eukaryotes can regulate genes by altering chromatin structure O Only prokaryotes can have coordinated expression of several genes O Only eukaryotes have proteins that act as activators of transcription
You are a developmental geneticist studying flowering time variation in Arabidopsis. You perform a mutagenesis screen to identify mutants in the photoperiod pathway. You conduct the screen and find two different plants that show the same mutant phenotype. You then use a complementation test. What is the predicted outcome of this test if both phenotypes are caused by mutations in separate genes? recover the wild type phenotype overexpress the gene O recover the mutant phenotype
Let’s suppose an X-linked gene in mice exists as two alleles, whichwe will call B and b. X-chromosome inactivation, a process inwhich one X chromosome is turned off, occurs in the somatic cellsof female mammals . Allele B encodes an mRNA that is 900 nucleotides long, whereas allele b contains a small deletion that shortens the mRNA to a length of 825 nucleotides.Draw the expected Northern blot that will be obtained usingmRNA isolated from somatic tissue of the followingmice:Lane 1. mRNA from an XbY male mouseLane 2. mRNA from an XbXb female mouseLane 3. mRNA from an XBXb female mouse.Note: The sample taken from the female mouse is not from aclone of cells. It is from a tissue sample, like the one shown.
Let’s suppose a researcher was interested in the effects of mutationson the expression of a protein-encoding gene for a proteinthat is 472 amino acids in length. This protein is expressed in leafcells of Arabidopsis thaliana. It has a molecular mass of approximately56,640 Da. Make a drawing that shows the expected resultsof a Western blot using proteins isolated from the leaf cells thatwere obtained from the following plants:Lane 1. A plant homozygous for a nonmutant geneLane 2. A plant homozygous for a deletion that removes the promoterfor this geneLane 3. A heterozygous plant in which one gene is nonmutant andthe other gene has a mutation that introduces an early stop codon atcodon 112Lane 4. A plant homozygous for a mutation that introduces anearly stop codon at codon 112Lane 5. A plant homozygous for a mutation that changes codon108 from a phenylalanine codon into a leucine codon
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Explain why loss-of-function hedgehog and smoothened mutations yield the same phenotype in flies, but a loss-of- function patched mutation yields the opposite phenotype.
e. You also study the expression of 2 different mutants for this gene. For each mutant answer the following: Does this mutation change the sequence of the protein produced? Why or why not? o If it does change the sequence of protein be sure to write out the new sequence. If it does not change the protein sequence, what effect (if any) would you expect it to have on expression of the gene? 1 20 ORI 40 60 5'..TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3’ 3' ...AAGCTCGAGAGCAGCAGCTCTATGCGCTACTATAATGACCATTATACCCCTACGTGATAG...5' promoter i. Mutant A has a single base pair substitution with the T/A being replaced with C/G base pair at position 35 (position denoted by the * in the sequence above).