Define the term maternal effect genes, and explain why the protein products of some of these genes are called morphogens.

Q: Draw a plot describing the change in allele frequency over time for metotic drive compared to an…

A: Meiosis is the type of cell division in which the parent cell divides to form the 4 gametes cells,…

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: Explain the role of mRNA, tRNA, and rRNA in geneexpression.

A: The transcription is the process in which the mRNA copied information from DNA for protein…

Q: Describe how P elements are used to producetransgenic Drosophila.

A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…

Q: Define genomic imprinting.

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: Explain Bicoid is the anterior morphogen?

A: Introduction  Bicoid: it is a protein product of maternal effect gene commonly found in flies such…

Q: Compare and contrast how maternal-effect genes, gap genes, and homeotic genes affect Drosophila…

A: Homeotic genes are the class of genes present in Drosophila that direct the development of the…

Q: Describe the formation steps of the dorso-ventral axis during development in Drosophila.

A: The mother fly produces oocytes that have already got anterior-posterior and dorsal-ventral axes…

Q: Describe the formation steps of the primary axis that first occurs during development in Drosophila…

A: Embryos produce different types of cells and functional tissues and organs are formed by these cells…

Q: What would be the most likely effect on development of puncturing the posterior end of a Drosophila…

A: Egg polarity are the earliest activated genes, which decide the formation of main body axis, such as…

Q: Define Drosophila,

A: Drosophila melanogaster is the species of Drosophila which is an inconspicuous, common fly found…

Q: Explain how X-linked inheritance differs from inheritance ofautosomal traits.

A: X-linked inheritance There are two possibilities if it inherit in dominant and the recessive.…

Q: What are maternal-effect genes? When are gene products from these genes made, and where are they…

A: Multicellular life forms create from a solitary prepared cell. This phone is supplied with the…

Q: Name the physical expression of genes in an individual.

A: A gene is a specific sequence of nucleotides in RNA or DNA that is located usually on a chromosome.…

Q: Describe the relationship between homeotic genes in Drosophila and in mice.

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

Q: The following system models the exchange of nutrients between mother and fetus in the placenta:…

A: The mechanism below simulates the flow of nutrients between the mother and the fetus in the womb.…

Q: Explain haploinsufficient genes.

A: To explain: To explain haploinsufficient genes.

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: If a mother snail is heterozygous, Dd, which gene products will the oocyte receive?

A: The mom's genotype specifically influences her offspring's phenotype Broken rule: gene expression an…

Q: Explain How Transgenic mice are produced by random integration of a foreign gene into the mouse germ…

A: A gene that is transferred naturally or by the help of genetic engineering is called transgene. The…

Q: Suppose you are analyzing the DNA from the polar bodies formed during human oogenesis. If the woman…

A: The process of the development of an oogonium into a mature ovum is termed oogenesis. It involves…

Q: List the three major classes of segmentation genes and outline the function of each.

A: Segmentation means dividing the embryo into even smaller segments. the specific structures are then…

Q: Propose one or more explanations for why Hox genes exhibit a relation between their order on the…

A: Gene is a functional unit of heredity. A gene is a sequence of nucleotides in genome that codes for…

Q: In Drosophila subobscura, the presence of a recessive gene called grandchildless (gs) causes the…

A: The grandchildless is an autosomal recessive condition (gs/gs). The males of the Drosophila…

Q: You cause a mutation in the bicoid gene in a Drosophila embryo. What effect will this have on this…

A: The members of Drosophila are called "fruit flies." Drosophila embryogenesis is the process by which…

Q: Explain how X-chromosome inactivation may affect thephenotype of female mammals

A: The inactivation center called XCI is responsible for the inactivation of X-chromosomes. This center…

Q: Explain how a gene in a multicellular organism may produce differentproducts in different types of…

A: Genes code for the amino acid sequence of polypeptides.

Q: List the factors believed to cause the wide variance between the maternal and between the maternal…

A: Introduction- There are several factors which are included which cause the wide variance of maternal…

Q: Distinguish among maternal effect genes, segmentation genes, and homeotic genes in Drosophila.

A: The pattern along the eventual head to tail (antero-posterior) axis of the flies Drosophila…

Q: Explain the functional roles of maternal-effect genes, gap genes, pair-rule genes, and…

A: The organism Drosophila melanogaster is also known as the fruit fly. These flies are easy to…

Q: Explain how the Sxl promoter “counts” the number of Xchromosomes in Drosophila.

A: In Drosophila, male flies have only one X chromosome and female flies have two XX chromosomes.

Q: Explain the unique features of Ig genes.

A: Ig genes encode Immunoglobulins which provide protection to our body from Pathogens or foreign…

Q: What is the difference between genetic maternal effect and genomic imprinting?

A: Gene is a fundamental physical and functional unit of heredity. Genetic disorders and all physical…

Q: Describe the type of mutations of Fog2  gene found in human patients and the phenotype of these…

A: Introduction: A mutation is a change in the DNA sequence of an organism. Mistakes in DNA replication…

Q: describe Genesis of an Hfr chromosome

A: Plasmids are small, extra-chromosomal DNA that are present outside the nucleus of the organism. They…

Q: Explain Using Drosophila transgenes to link a mutant phenotype to a gene

A: A transformation is an arbitrary change in DNA which in this manner influences a gene as well as a…

Q: explain through diagram  Genesis of an Hfr chromosome

A: The mechanism involving transfer of genetic material between species of unrelated generations is…

Q: Describe the construction of knockout mice?

A: A knockout mice is a special type of mouse which is genetically modified in which scientists have…

Q: List the factors believed to cause the wide variance between the maternal andbetween the maternal…

A: The fetus is connected to the mother with the help of an umbilical cord. The exchange of food, and…

Q: Describe the expression pattern of the Drosophila geneeve in the early embryo.

A: Drosophila development involves the specification of early embryonic cells by various cytoplasmic…

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

A: The follicles, which are hollow balls of cells containing immature eggs, are present in the ovaries…

Q: The anterior–posterior axis of a Drosophila embryo is first established by certain (a) homeotic…

A: Drosophila is an important organism in developmental genetics research because it has a short life…

Q: Explain Maternal effect mutants affecting AP axis patterning

A: The fruit fly Drosophila melanogaster is well suited to genetic screens because their phenotypes are…

Q: Explain how polytene chromosomes of Drosophila are produced and how they form a six-armed structure?

A: Polytene chromosomes are large chromosomes that have thousands of DNA strands. They provide a high…

Q: Discuss how the anterior portion of the anteroposterior axis is established in Drosophila. What…

A: Genes come in pairs and are responsible for the inheritance and expression of the associated…