True or False: Follicle cells on the dorsal side of the Drosophila embryo produce the Backless protein.

Q: What percent of the offspring will be homozygous recessive?

A: Punnett square: It is the diagram used by the biologist to find out the genotype probability of an…

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: When an embryo is homozygous mutant for the gap gene Kr, the fourth and fifth stripes of the…

A: Segmentation in the Drosophila embryo is regulated by pair-rule genes and gap genes.

Q: True or false about the following statements on Drosophila eye development     a. Hh, which is…

A: Here i discuss the statements about eye development in Drosophila. Note:- according to bartleby…

Q: <pression of a homeotic gene in the wrong tissue in Drosophila results in the development of an…

A: INTRODUCTION Homeotic gene, any of a group of genes that control the pattern of body formation…

Q: What specific type of disorder is Down syndrome?   Would amniocentesis have indicated that the fetus…

A: Chromosomal anomalies chromosomal anomalies refer to the change or alteration in the genetic makeup…

Q: Describe key events in early Drosophila developmentthat occur before segmentation is first apparent.

A: The life cycle of drosophila consists of various stages like embryogenesis, larval stage, pupal…

Q: Polarity of oocyte of Drosophila What is the difference between the anterior and posterior…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: What cellular signaling molecule (mediator) is released to activate B lymphocytes at stage 2". ●…

A: B lymphocytes are the cells of immune system which will fight with pathogens via the formation of…

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: Cleavage divides the eggs of vertebrates and many other animals into a cluster of separate cells. By…

A: An embryo in development is an excellent example of intricate biological self-organization and…

Q: If gene transcription is inhibited after fertilization, development past the two-cell stage does not…

A: The difference lies in the distinct developmental processes: gene transcription inhibition halts…

Q: Gene dosage—the number of copies of a gene that areactively being expressed—is important to proper…

A: The number of copies of a particular gene, present in the genome refers to gene dosage. A proper…

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: If a genetic female fetus is exposed to testosterone in utero, would that individual develop a…

A: Men have noticeably more testosterone on average than women, despite the fact that testosterone is…

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: Engrailed, even-skipped, hunchback, and Antennapedia.To a Drosophila geneticist, what are they? How…

A: Drosophila represents the genus that includes flies that belong to the Drosophilidae family. The…

Q: How parental age affect mutation rates in the Zygote/offspring. Why does a woman’s age impact the…

A: Any alteration in the nucleotide sequence of an organism's genome is known as mutation. Age of the…

Q: You have identified a Drosophila gene that is expressed exclusively in the odd-numbered "stripes" in…

A: A loss-of-function mutation is a type of genetic mutation that disrupts the normal function of a…

Q: (a) Explain the signals (wingless, Hh, Serrate) how they are sent and received (b) what is the…

A: Introduction. Segmentation in drosophila is a spatially and temporally regulated sequential event.…

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: Define ‘kinetochore’. Where would one expect to find a kinetochore?

A: Chromosomes have a highly condensed form of DNA. Chromosome appears mainly at metaphase and exits at…

Q: Match each of the following categories of Drosophila developmental genes with the correct…

A: Genes are segments of DNA that contain the instructions for the development, function, and…

Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: Sex determination in drosophila melanogaster is done by balancing the male determinants on the…

Q: A drug causes the degradation of Cactus protein. What would be the effect of administering this drug…

A:

Q: What specific observations (evidence) support the conclusions about sex determination in Drosophila…

A: BASIC INFORMATION SEX DETERMINATION  It is basically the establishment of the gender of an…

Q: Briefly discuss the role of the following proteins/cellular components (centrosome, microtubules,…

A: cell polarity in the elegans embryo Cell polarity is referred to as a fundamental principle that…

Q: In drosophila embryos that are null mutants for hedgehog (hh'/hh), expression of which of the…

A: In drosophila, segment polarity genes are those genes which act to specify the correct pattern of…

Q: On the left side of this figure, explain why the offspringdoes not have Prader-Willi syndrome but…

A: Genomic imprinting is a phenomenon of marking a gene with the information regarding the parental…

Q: py-5 and skn-1 mutant result in phenotypes for C elegans

A: C. elegans has established itself as a valuable model organism for identifying the genes and genetic…

Q: explain Position-effect variegation in Drosophila?

A: Mutation is defined as the permanent change or alterations happening in the sequence of the DNA of…

Q: What possible conclusions can be drawn from the observations that in male Drosophila, no crossing…

A: The structural components are also termed synaptonemal complexes. During the zygonema stage of…

Q: What are some examples of phenotypic differences of Drosophila? White eyes Ebony color Sepia eyes…

A: Drosophila melanogaster, commonly known as the fruit fly, is a small insect that is widely used as a…

Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: Sex determination in Drosophila is achieved by the balance of female determinants on the X…

Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: In Drosophila, sex determination is achieved by a balance of female determinants on the X chromosome…

Q: Briefly describe how the bicoid and nanos genes help to determine the anterior–posterior axis of the…

A: Drosophila melanogaster is a fly species that belong to order Diptera. Drosophila is also known as…

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…

Q: Which of the following proteins is a combinatorial transcriptional regulator in Drosophila that…

A: There are few important points : Combinatorial transcriptional regulator : It is a particular…

Q: Examples of genomic imprinting other than insulin-like growth factor 2

A: Genetic imprinting can be defined as when one copy of a gene is silenced due to its parental origin.…