A key event that initially determines female or male development in Drosophila is the a. transcription of the Sxl gene. b. alternative splicing of the Sxl pre-mRNA. c. expression of the ix gene. d. expression of the her gene.

Q: Morphogens area. molecules that disrupt normal development.b. molecules that convey positional…

A: Mutagenic agents are the agents that cause heritable and reversible changes or mutations in the…

Q: Explain why maternal effect genes exert their effects during theearly stages of development

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

Q: What is the molecular explanation for maternal effect?a. The father’s gene is silenced at…

A: The maternal-effect is the influence on the phenotypic expression in an embryo or progeny due to the…

Q: Cell differentiation always involves(A) transcription of the myoD gene.(B) the movement of cells.(C)…

A: The cell is the basic structural, functional, and biological unit of all known organisms. A cell is…

Q: In mice, the copy of the Igf2 gene that is inherited from the mother isnever expressed in her…

A: The unit of heredity is a gene. These genes account for different phenotypic and genotypic…

Q: The FOXP gene strongly affects what else, in addition to brain development? A. The stomach and…

A: Forkhead box protein P2 (FOXP or FOXP2) is a protein that is encoded by the FOXP2 gene in humans.…

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: Future kidney cells and heart cells can differentiate into their respective specialized cell types…

A: Transcription factors are a frequent mechanism for cells to respond to information from outside the…

Q: During development, cells become a. differentiated before they become determined. b. determined…

A: The biological cell is the fundamental unit of life. It is a hub of metabolic activities. Numerous…

Q: Describe the role of the SRY gene in mammalian sexual development.

A: The human male genital or reproductive system has two sections, the external and internal male…

Q: proteins and RNA specified by maternal genes accumulate in the  _____  of the oocyte and influence…

A: Maternal effects often occur because the mother supplies a particular mRNA or protein to the oocyte.

Q: Excess exposure to the sun can lead to skin cancer due to mutations in the DNA of your skin cells.…

A: Answer.  When a normal dividing cell lost its control over its division, differentiation and…

Q: Genetic mutations can provide insights into the mechanisms of complex cellular or developmental…

A: The term- mutation has been described as changes to the base pair sequence of the genetic material…

Q: One of the main questions in the field of developmental biology is how cell differentiation works at…

A: Ans-  How cells become different from each other and carry out distinct functions due to…

Q: . CRANIAL (CEPHALIC) NEURAL CREST B. TRUNK NEURAL CREST C. VAGAL AND SACRAL NEURAL CREST Trace their…

A: Introduction Developmental biology can be defined as the study of the process by which animals and…

Q: Aristotle considered two opposing theories for development: Describe what is meant by these two…

A:

Q: Explain the importance of differential gene expression in development

A: Explain the importance of differential gene expression in development?

Q: What is the phenotype of the gnom mutant?   A. Loss of cell fate   B. Lack of cell-cell…

A: Introduction Auxin is an important plant hormone that regulates cell division and differentiation…

Q: Which of the following best describes the concept of cell differentiation during the development of…

A: Development is the process of changing the shape, size and function of an organism during it's…

Q: The cloning experiments carried out on frogs demonstrated that (a) all differentiated frog cells are…

A: Cloning is an established methods in which various types of materials are used to produce several…

Q: The somatic stem cells are derived from source such as_________.a) Bone marrow, embryos, amniotic…

A: Somatic stem cells, also known as adult stem cells are undifferentiated cells that are found in the…

Q: describe how the Drosophila group and others analyzed the transmissionpatterns of genes on the same…

A: Genetic linkage describes the way during which two genes that are located on the brink of one…

Q: Explain mRNA and protein products of maternal effect genes within the early embryo?

A: Embryonic development refers to the development and formation of the embryo. It is characterized…

Q: An embryologist measures the concentrations of three morphogens (A, B, C) in a row of cells across…

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

Q: In an experiment described in lecture, a portion of tissue containing ZPA was transported to the…

A: Option A

Q: What are the relative merits of Drosophila, C. elegans, M. musculus, and Arabidopsis as model…

A: Model organisms are employed in research experiments to study a specific phenomenon where the…

Q: Epigenetic changes maya. be programmed during development.b. be caused by environmental changes.c.…

A: Gene is a specific nucleotide sequences in RNA or DNA. It is generally located on a chromosome. The…

Q: A. Name the two proteins that induce a negative feedback in this pathway and explain why both…

A: Since, you have posted multiple questions we will solve the first question for you. If you want any…

Q: A mutation in the control region of a Hox gene that is normally expressed in the thorax causes the…

A: Mutations are changes in the sequence of DNA which may or may not affect the phenotype of the…

Q: You inject bicoid MRNA into the posterior end of a fertilized fruit fly egg just prior to the first…

A: Drosophila refers to the genus of flies that is commonly called fruit flies. It is a small fly seen…

Q: At which stage in development would a cell's gene expression not be altered between cell types? a)…

A: Introduction :- Developmental biology allows us to study and observe the changes that takes place…

Q: Signal transduction pathways are important mechanisms for cell-to-cell communication in…

A: thus multicellular organisms where cell-cell communication allows cells to coordinate with different…

Q: Will a mutation in this gene display a defect in the mother with the mutation, or in her offspring…

A: Maternal effect of genetic and phenotypic expression usually determines certain characteristics…

Q: Explain a phenotype that can occur when an animal gets two mutant alleles of the Homeotic (Hox)…

A: Gene is that part of the DNA that expresses specific traits in a cell, a gene that has a promoter,…

Q: For genes that control pathways of development, loss-of-function mutations are usually recessive…

A: Small stretches of nucleotides present on the DNA molecule that encodes information for the…

Q: How may genes play a role in the susceptibility of inheriting cancers? The reproductive system…

A: Cancer is a disease in which the body's cells grow out of control and spread to other tissues. Any…

Q: You have discovered a gene in mice that is similar to a gene in yeast. How might you determine…

A: Genes carry coded genetic information in the form of specific nucleotide sequences. This specific…

Q: Describe the major difference between sex determination in Drosophila and in humans.

A: Drosophila melanogaster refers to the fruit fly which is widely used in genetic research as it has…

Q: Identify Genes Required for Specific Developmental Processes

A: The gene can be defined as a basic physical and functional unit of heredity. The genes are made up…

Q: Gene expression does not vary by_______ . a. cell type c. stage of development b. extracellular…

A: Gene expression is defined as the process wherein genes are read/translated using process-specific…

Q: List the stages of Drosophila development.

A: Drosophila is a fly that belongs class insecta and order diptera of Animal kingdom. It is commonly…

Q: A cytoplasmic determinant can control development at the early stages of development because....?…

A: Cytoplasmic determinant  Cytoplasmic determinant are very important molecules that help in the…