What changes, if any, would you predict would occur in the pigmentation of Drosophila melanogaster with increased global warming? What type of genetic changes would you expect to see? Be as specific as you can.
Q: provide one example from the Drosophila AP toolkit for "Toolkit genes can be classified according to…
A: The toolkit gene is a subset of gene whose product controls embryo development.
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Q: Describe the formation steps of the dorso-ventral axis during development in Drosophila.
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Q: As a volunteer in a genetics lab, Professor Uhura tasked you with testing the biparental…
A: Introduction: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species…
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A: Ommatidia are the compound eye of arthropods.
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A: Positional information is a signal which is received by each and every cell of the body in an…
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Q: Which of the following molecular events is NOT involved in Drosophila ventralization? a. Easter…
A: NOTE: since you have posted multiple questions so we will be solving the first three for you. As per…
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Q: What is positional information? Discuss three different ways that cells obtain positional…
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Q: • Describe what it means that a strain of Drosophila is wild-type for a particular character.…
A: Wild type Strain- it means an individual has a normal phenotype which is generally found in the…
Q: You cause a mutation in the bicoid gene in a Drosophila embryo. What effect will this have on this…
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Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…
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Q: Explain how loss-of-function mutations in the following categories of genes would affect the…
A: Drosophila is also called fruit-fly. It is often used as a model for biological investigations.
Q: What is similar about the positions of the HOX genes on the chromosomes in the fruit fly and mouse;…
A: Homeotic genes are regulatory genes that play an important role in the regulation of development of…
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Q: explain Position-effect variegation in Drosophila?
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Q: Where are there over 250 species of fruit flies (Drosophila)?
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Q: Why is it that mutations in bicoid and nanos exhibit genetic maternal effect in Drosophila (a…
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A: The mutation is change or damage in the sequence of the genome or deoxyribonucleic acid (DNA). The…
Q: What is positional information? What are three different ways that cells obtain positional…
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Q: Consider the following variations in Drosophila melanogaster, relative to the wild-type: White eyes…
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Q: Genetic maternal effect is often seen in mammals. For example, research shows that the maternal…
A: In genetics, a maternal effect occurs when a mother's genotype is expressed in the phenotype of her…
Q: List the main classes of zygotic genes. What is the function of each class of these genes?
A: Zygotic genes are the genes expressed in the early embryo. Zygotic genes are classified into three…
Q: Distinguish between the syncytial blastoderm stage and the cellular blastoderm stage in Drosophila…
A: Both the syncytial and cellular blastoderm are early developmental stages of Drosophila. The…
Q: Illustrate the chromosomes in the salivary gland of Drosophila melanogaster
A: Drosophila melanogaster have polytene chromosome in their salivary gland.
Q: As a volunteer in a genetics lab, Professor Uhura tasked you with testing the biparental…
A: Introduction: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species…
Q: Imagine that a female fruit fly carries a mutation that is heritable (can be passed on to the…
A: Genes come in pairs and are responsible for the inheritance and expression of the associated…
Q: Imagine that a female fruit fly carries a mutation that is heritable (can be passed on to the…
A: Genes come in pairs and are responsible for the inheritance and expression of the associated…
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Q: List the stages of Drosophila development.
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Q: It seems that developmental genetics boils down to a complex network of gene regulation. Try to draw…
A: The developmental genetics of Drosophila is a complex network of genes which are regulating the…
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A: Introduction During the developmental phase, cells have to move to form germ layers such as…
What changes, if any, would you predict would occur in the
pigmentation of Drosophila melanogaster with increased global
warming? What type of genetic changes would you expect to see? Be
as specific as you can.
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- You have identified a Drosophila gene that is expressed exclusively in the odd-numbered "stripes" in the cellular blastoderm. Assuming that this gene is not redundant, what would be the most likely phenotype cause by a loss-of-function mutation in this gene? an embryo missing odd numbered segments an adult fly with a second pair of wings instead of halteres an embryo with two anterior ends an embryo missing even-numbered segments an embryo missing larval segments 3-10It seems that developmental genetics boils down to a complex network of gene regulation. Try to draw a structure of this network for Drosophila. How many genes do you think are necessary to complete the developmental network for the fruit fly? How many genes do you think are needed for a network to specify one segment? Do you think it is more difficult to identify genes that are involved in the beginning, middle, or end of this network? Suppose you were trying to identify all of the genes needed for development in a chicken. Knowing what you know about Drosophila development, would you first try to identify genes necessary for early development, or would you begin by identifying genes involved in cell differentiation?A number of genes that control expression of Hox genes in Drosophila have been identified. One of these homozygous mutants is extra sex combs, where some of the head and all of the thorax and abdominal segments develop as the last abdominal segment. In other words, all affected segments develop as posterior segments. What does this phenotype tell you about which set of Hox genes is controlled by the extra sex combs gene?
- As a volunteer in a genetics lab, Professor Uhura tasked you with testing the biparental mitochondria inheritance hypothesis in Drosophila for a metabolic phenotype that they are studying. Because you just got started in the lab, the professor tells you are not allowed to use any high-end high-tech resources to perform your experiments and to collect data. The only resources you have access to are the various stocks of Drosophila available in the incubators, the resources to feed the flies and to transfer the flies from vial to vial to perform crosses, and tools to measure the metabolic phenotype of interest. Describe an experimental approach using crosses you could follow that could potentially provide you with data to support the biparental mtDNA inheritance hypothesis?Name three possible factors contributing to early asymmetries in a developing embryo (i.e. what are the kinds of things early on that lead to the development of the body axes - dn, a/p, l/r, etc)? In the fruit fly drosophila melanogaster, the anterior-to-posterior body axis becomes segmented into distinct regions. explain the role of the genes bicoid and nanos in this process.provide one example from the Drosophila AP toolkit for "Toolkit genes can be classified according to the phenotypes caused by their mutation. Similar mutant phenotypes often reflect genes that function in a single developmental pathway. Distinct pathways exist for the generation of body axes, for example, and for the formation and identity of fields."
- In Drosophila subobscura, the presence of a recessive gene called grandchildless (gs) causes the offspring of homozygous females, but not those of homozygous males, to be sterile. Can you offer an explanation as to why females and not males are affected by the mutant gene?Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call C and d. The two homozygous C/C and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/C and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for C and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic. Using the number of flies expected for the Parental and the Recombinant genotypes and the formula that defines recombination frequency, what is the distance between loci C…Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic. Considering that out of 1000 flies resulting from the Testcross only 125 are rhythmic how many flies in total are approximatively expected for the Parental genotypes?…
- Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic. Which is the genotype of the rhythmic flies resulting from the testcross? Select only one answer 1. C/C d/d 2. C/c D/d 3. C/c d/d 4. c/c…Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic. Using the number of flies expected for the Parental and the Recombinant genotypes and the formula that defines recombination frequency, what is the recombination…Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic. Comparing the number of flies expected for the Parental and the Recombinant genotypes, what can be concluded about the C and D loci? Select only one answer. 1. The…