Which of the following statements about sex determination in Drosophila is false?     Males transcribe sex-lethal, females do not.     The X/A ratio controls the transcription of sex-lethal.     Double-sex RNA is spliced differently in males and females.     Transformer regulates the splicing of double-sex RNA.     Functional transformer protein is only produced in females.

Q: he Drosophila oocyte/embryos A-F show the expression patterns of various mRNAs.  Which is the…

A: Fruit flies, or Drosophila melanogaster, have led to significant research as model organisms in…

Q: Pax6 is a gene that is involved in mammalian eye development. Mutations in this gene result in a…

A: The comparison of the eyes of humans, mice, and flies supports this component of Darwin's…

Q: The Xist transcript on the X chromosome is thought to be part of an RNAi mechanism controlling the…

A: A designated transcript is not directly refuted by the Xist transcript. It is part of a more…

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. In which sex, XY males or XX females, would the Sxl protein bind to the msl-2 mRNA? b. As…

A: Drosophila sex determination and dosage compensation are primarily controlled by two distinct sets…

Q: Why is a β-lactoglobulin promoter used?

A: Promoters are the DNA sequences present at the beginning of a gene. A promoter is the site at which…

Q: What kind of response is seen via temperature stress in Drosophila? Are these kinds of elements…

A: The physiology of organisms, especially ectotherms, is significantly influenced by temperature,…

Q: st noncoding RNA (ncRNA) triggers X inactivation by coating the X chromosome that produces it and by…

A: Xist is a long non-coding RNA on the X chromosome. Xist acronym is X -inactive-specific transcript…

Q: The CTCF protein is involved in the regulation of the Igf2-H19 gene cluster. Which of the following…

A: The gene expression involves transcription and later translation. Different mechanisms are involved…

Q: Outline the role of alternative splicing in the control of sex differentiation in Drosophila.

A: Alternative splicing is a regulated process in which a single gene coding for multiple proteins…

Q: Many genes important in development are regulated by effecting their mRNA. What is the mechanism…

A: The regulation of gene expression is a fundamental process that underlies many biological phenomena,…

Q: Why does X inactivation occur in female mammals?

A: A Chromosome is an entire chain of Deoxyribonucleic acid (DNA) with stabilizing proteins. The DNA is…

Q: In Drosophila the genes twist, snail, rhomboid and sog are expressed at differing positions along…

A: The DV axis in Drosophila refers to the dorsal-ventral polarity that is established during embryonic…

Q: In all mammals, insulin growth factor 2 is expressed from only the allele that is inherited by one's…

A: Igf2 stands for insulin growth factor 2. It is responsible for maintaining the growth in the tissue…

Q: Although each cell in your body contains the same set of genes, the genes that are “turned on”…

A: Genes are the sequence of nucleotide found on our DNA which is capable of undergoing transciption…

Q: Why does X inactivation occur in female mammals?

A: Causes of X inactivation: X-chromosome inactivation usually define through the term that they are…

Q: Presence of proximal and distal promoters in Drosophila melanogaster for alcohol dehydrogenase. Is…

A: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species is often…

Q: Can I get a paragraph about the Repo protein that is used in Drosophila melangaster?

A: REPO (reverse polarity) is a paired-like homeodomain protein expressed in the glial cells of…

Q: Compared to a differentiated cell in the body, embryonic cells at the blastocyst stage have: O Less…

A: In the human embryo development, the preimplantation period is characterized by changes occurring in…

Q: Explain the Drosophila genetics tool for gene expression known as the UAS-GAL4 system

A: The GAL4-UAS framework is a biochemical technique used to examine quality articulation and capacity…

Q: Testosterone is a hormone that affects gene expression. Only some cells in your body are affected by…

A: Testosterone is a type of hormone released by the human body. It’s essentially synthesized in men by…

Q: Transgenic mice would be expected to have all of the following characteristics EXCEPT: Contain the…

A: A transgenic animal is an animal that expresses an exogenous gene. Transgenic animals are used for…

Q: Early development depends on the temporal and spatial interplay between maternally supplied material…

A: Gastrulation is the process during which three cell layers develop in the embryo: these three germ…

Q: Which of the following types of RNA is responsible for helping to reestablish methylation patterns…

A: The recently discovered piwi-associated RNAs(piRNAs) are found to be responsible for the induction…

Q: Describe two of the advantages of Drosophila as a model organism in genetics studies.

A: Drosophila a genus of two-winged flies also known as fruit flies because they gather around overripe…

Q: Draw a diagram to illustrate how a concentration gradient of a transcription factor along the…

A: In drosophila the anterior posterior axis is determined before birth due to its maternal effects…

Q: The loss-of-function Naked mutant in Drosophila lacks bristles. What is the most appropriate…

A: Answer. Cancer critical genes are grouped into two broad classes, according to whether the cancer…

Q: Please note that Hrb27C is a gene located on chromosome 2L and FRT40A refers to an FRT sequence…

A: Approach to solving the question: To solve the question, it is essential to understand the…

Q: Which of the following is not true? ○ In a somatic cell, imprinted genes are not expressed because…

A: Here's the analysis of each statement:In a somatic cell, imprinted genes are not expressed because…

Q: Histone methylation alters the chromatin structure with varied effects depending on the specific…

A: Chemical modification of all histone proteins occurs. The modification that occurs at histone…

Q: In humans, the disease cystic fibrosis is caused by a recessive allele for a gene that encodes a…

A: Given that, in human, cystic fibrosis occurs when recessive allele for a gene (encodes specific type…

Q: In Table 13-1, what is the most common function of proteins that contribute to pattern formation?…

A: Drosophila melanogaster, a fruit fly, is utilised as a model organism in research spanning from…

Q: Explain how alternative splicing affects sex determination in Drosophila.

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What is the S-gene and what role does it play in plants? Be specific

A: Genes carry information that plays an important role in determining the traits that are inherited…

Q: A disease is caused by having no functional protein produced from the kip gene. An individual has…

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

Q: The methylation of a promotor: is random; sometimes the promotors are methylated and sometimes…

A: methylation of DNA has been associated with silencing of the gene expression and methylated DNA is…

Q: Explain what a morphogen is, and describe how it exerts its effects. What do you expect will happen…

A: It is a chemical which can cause or determine morphogenesis.

Q: HEAD THORAX ABDOMEN Bicoid Hunchback Giant Krüppel Knirps

A: Gene is a unit of heredity that is transferred from 1 generation to another, from parents to their…