You found a strain of mutant fruit flies (Drosophila) living on the rotten bananas in your dorm room. You notice that many of the larvae have abnormal abdominal segments. You want to know if the “abdomenless” mutation is a maternal effect gene. Describe an experiment you would do to determine this, and the results that would support and contradict the notion that the abdomenless gene encodes a maternal determinant.

Q: Using coat color in mice and the development of female honeybees as examples, explain how dietary…

A: The inheritance of phenotypic characteristics without any changes at the genetic level is called…

Q: What is the difference between a maternal-effect gene and a zygotic gene? Of the following genes…

A: Genes are the basic biological unit of heredity. They are a segment of deoxyribonucleic acid (DNA)…

Q: Nanos is a strict maternal-effect gene in Drosophila; that is not transcribed in the embryo.…

A: The phenotypes of embryos with mutations in nanos can vary greatly, so it is important to predict…

Q: A number of genes that control expression of Hox genes in Drosophila have been identified. One of…

A: Homeotic genes are the regulatory genes that play an important role in the regulation of the…

Q: Using a transgenic technique, propose an experiment to determine whether Cdx2 is sufficient for…

A: The objective of this question is to design an experiment using transgenic techniques to determine…

Q: You are studying Hox genes in crane flies (Leptotarsus testaceus). The cranefly genome is sequenced,…

A: To find: Where the homologue of EVE gene is expressed in cranefly embryos

Q: A wild type strain of Drosophila was found to carry a transposable element called copia. From this…

A: The following is a short summary of the genetics terminology and Drosophila notation used in this…

Q: graduating from UNC Charlotte with the BS in Biology, you get a job with an agro-chemical company…

A: Different genes in drosophila form different proteins that help in formation of an anterior…

Q: When a particular mutagen identified by the Ames testis injected into mice, it causes the appearance…

A: Cancer is considered to be a disease that has abnormal cell growth that can invasive. The cancerous…

Q: The transcription factor Pax6 is required continually during the life of a mouse (or a human) for…

A: Pax6 is a kind of transcription factor which is required for the development of retina in mouse and…

Q: The phenotype of a heterozygous mouse (Aa) is agouti.  The agouti banding pattern is due to altered…

A: * Homozygous dominant and Heterozygous will produce agouti that is AA or Aa respectively  and the…

Q: Studies on monkeys have provided insight on the role of maternal care on the epigenome. Imagine you…

A: The study to examine the role of epigenetics in shaping animal / human behaviour is called as…

Q: After graduating from UNC Charlotte with the BS in Biology, you get a job with an agro-chemical…

A: As you can see in the treatment group, there is a significant decrease in the levels of proteins…

Q: Pax-6 is a gene that is involved in eye formation in many invertebrates, such as Drosophila. Pax-6…

A: Genes are the units of heredity, in other words, we can say genes are the short nucleotide sequences…

Q: Another way to study the role of proteins (e.g., transcription factors) that function in development…

A: Proteins are macromolecules formed by the long chain of amino acids and are the functional product…

Q: In mice, the A allele causes agouti fur, the AY allele causes yellow fur and is dominant to the A…

A: Mutations are alterations in the DNA sequence of an organism. Small changes, such as adding or…

Q: You find a new gene and want to know if it is expressed in the nervous system of Drosophila.What do…

A: Gene expression is a process in which the genetic instructions of genes are utilized to manage…

Q: Use the dropdowns to indicate the pattern of methylation and gene expression expected for a…

A: Here's a breakdown of the key points:Somatic cell inheritance: Somatic cells inherit one allele from…

Q: At the molecular level, how do you think a gain-of-function mutation in a developmental gene might…

A: Mutations are referred to as the sudden heritable changes in the deoxyribonucleic aid of an…

Q: #17 You have isolated a gene that is important for the production of milk and wish to study its…

A: Orthologous genes are those which encode for the same protein which performs the same functions but…

Q: How would you devise a screen to identify recessive mutations in Drosophila that result in embryo…

A: Fruit flies, or Drosophila melanogaster, are a good model for studying genetics and were chosen by…

Q: Describe the mechanism of genomic imprinting of the Igf2 gene in mammals.

A: Genomic imprinting is an epigenetic form of gene regulation. This results in the function of only…

Q: explain how the deletion of the same set of genes can result in such different diseases. The example…

A: Imprinting is an epigenetic phenomenon connected to Prader-willi syndrome (PWS). A foetus typically…

Q: Geneticists have been exploring ways to suppress the expression of the extra chromosome 21 in…

A: Chromosomes are a compact form of DNA wrapped around some proteins and are generally present in a…