A cytoplasmic determinant can control development at the early stages of development because....? Group of answer choices a. it is a universal activator of all genes b. it is present evenly throughout the cytoplasm c. it is activated by cell division d. it is controlled by genes present in the cytoplasm e. it is laid down in the egg cell by the mother
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: Which gene program is described correctly? A. Cell division is the process whereby identical cells…
A: Which gene program is described correctly?
Q: The following are various developmental phenomena relating to the concepts and principles in…
A: Introduction: Developmental biology and molecular biology give insights into the evolutionary…
Q: Which of the following is a possible explanation for pleiotropy?a. The expression of a single gene…
A: Genetics is the investigation of genes and attempts to clarify what they are and how they work.…
Q: Which of the following defines fate? A. process of which a potency of a cell becomes identical.…
A: Fate is the ultimate outcome of the cellular reprogramming i.e the pre-decided structure and…
Q: The following are various developmental phenomena relating to the concepts and principles in…
A: Developmental biology is a branch if biology that defines about the growth of the multicellular…
Q: Which of the following statements does NOT describe an environmental influence on the expression of…
A: An organism's phenotype is a function of its genotype, and it also has an effect on the environment.…
Q: The only thing that effects gene expression is if the gene is dominant Choose: A. Yes, all…
A: Gene expression is the process in which genetic information can be interpreted as phenotype. The…
Q: The following are various developmental phenomena relating to the concepts and principles in…
A: Developmental biology is the branch of biology which deals with development and growth of organisms.…
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: Which of the following statement(s) is/are true with regard to positional information in Drosophila?…
A: Positional information is a signal which is received by each and every cell of the body in an…
Q: At birth a child has got blue eyes, but now his/her eyes turn brown. Which of the following…
A: The genes which encode for the eye color actually just decide the levels of pigment to be present in…
Q: When the phenotype of the offspring is determined by endoparasites in the father it is… a.…
A: ▪︎Genetics consists of phenomena called epistasis where the phenotypic effect of alleles at one…
Q: #1. The exact location of your thumb and pinky. What concept? Question #2. Death of some…
A: Development of any organ is a very complex process as it involved many areas of biology like cell…
Q: Why are multiple copies of the X chromosome tolerated?
A: In females, two X are present whereas in males only one X is present. To balance the expression of…
Q: In most animals, a larger amount of cytoplasm is carried by the egg then by sperm. Similarly, the…
A: Nuclear genes are the genes or the genetic information present in the chromosomes which are usually…
Q: A hypothetical cell lineage is shown here. A gene, which we will call gene X, is activated in the…
A: The term heterochronic indicates the cellular and tissue level development that takes place at an…
Q: What is the explanation for maternal effect inheritance at the molecularand cellular level?a. The…
A: maternal inheritance is also known as cytoplasmic inheritance or extra nuclear inheritance it occurs…
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: 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: The following choices are various developmental phenomena relating to the concepts and principles in…
A: The biological species thought explains why the members of a species correspond each other, i.e.…
Q: Figure 13-7 illustrates the expression of the Ultrabithorax(Ubx) Hox protein in developing flight…
A: The Hox genes were linked to the diversification of animal plans' evolution. Regulatory changes in…
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: What complications might arise from genetic screens targeting an organ that differentiates late in…
A: The eye has been one of the most intensively studied organs in Drosophila. The wealth of knowledge…
Q: What is true of the Progress Zone model? a) the length of time a cell resides in the progress zone…
A: Introduction: * The classical progress zone model proposes started that the limb bud grows under…
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: Removing the patch of tissue called the ZPA from one limb bud and placing into onto another…
A: ZPA is a zone of polarising activity, gives molecular signaling during limb formation in…
Q: In your own words, explain how selective affinity drives cells sorting during embryogenesis.
A: Embryogenesis is the process of development of embryo after the formation of zygote .
Q: Which of these are cellular activities that sustain a single-celled organism through its lifetime?…
A: The one cell of a unicellular organism must be able to perform all the functions necessary for life.…
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: Which of the following defines fate? process of which a potency of a cell becomes identical.…
A: The cells have genes that control the cellular processes of proliferation, differentiation and…
Q: For XCI to occur, where are the Xist and Tsix genes expressed?a. Xist is expressed only on Xa, and…
A: The inactivation of the X chromosome leads to the formation of a Barr body. It ensures the dosage…
Q: Brainbow is a genetic approach to fate mapping developed to label cells with a seeming rainbow of…
A: Brainbow is a genetic approach to fate mapping developed to label cells with a seeming rainbow of…
Q: The following choices are various developmental phenomena relating to the concepts and principles in…
A: Developmental biology is the field that deals with how animals and plants develop from a single cell…
Q: The following choices are various developmental phenomena relating to the concepts and principles in…
A: Introduction: Developmental biology and molecular biology give insights into the evolutionary…
Q: Which of the following is NOT true regarding Hox genes. A) The sequence they appear in their…
A: Hox genes: Hox genes are a group of similar genes that define parts of an embryo's structure along…
Q: 1. After receiving the SR signal, stem cells in the developing organism will have an increased…
A: Gene is unit of DNA that is usually located on a chromosome and that controls the development of one…
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: A. Concept of apoptosis
A: Developmental biology is the study of the development of a single fertilized cell into a complete…
Q: If we Remove transcription in the development equation, will an organism continue to exist?
A: DNA and RNA are the nucleic acids that are composed of nucleotides. DNA contain different genes that…
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: The following are various developmental phenomena relating to the concepts and principles in…
A: Developmental biology It is defined as the field of biology that studies the processes through which…
Q: Sea urchins exhibit a holoblastic cleavage pattern. What factor contribute to this cleavage…
A: After fertilization, the zygote undergoes a series of mitotic divisions called cleavage, where the…
Q: Molecular geneticists have performed experiments in which they altered the number of copies of the…
A: What are bicoid genes? Bicoid protein gradient formation is one of the earliest steps in fruit fly…
Q: Imagine that a female fruit fly carries a mutation that is heritable (can be passed on to the…
A: Genes come in pairs and are responsible for the inheritance and expression of the associated…
Q: Question #1. Death of some lymphocytes. What concept? Question #2. There are two sets of organizing…
A: Developmental biology is a field of studying the forms and functions of an organism. There are…
Q: Which of the following are included in the chimera protocol for determining how genes are regulated…
A: Chimera -- Manipulation of genes with in the genome has proven an effective method for learning…
Q: In the late 1980s, this gradient hypothesis was united with a genetic approach to the study of…
A: Introduction During the developmental phase, cells have to move to form germ layers such as…
A cytoplasmic determinant can control development at the early stages of development because....?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Cell differentiation occurs through _______________, whereas morphogenesis involves _______________. (a) pattern formation; cell determination (b) cell division; cell expansion (c) cell expansion; pattern formation (d) cell determination; cell division (e) cell determination; pattern formationThe mechanism that leads directly to morphogenesis is (a) differential gene expression (b) pattern formation (c) nuclear equivalence (d) cell differentiation (e) cell determinationCarefully distinguish between the terms differentiation and determination. Which phenomenon occurs initially during development?
- A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Central self-tolerance in the immune system arises when maturing T cells in the thymus undergo apoptosis when they bind to self-antigens. Based on this information, what would MOST likely occur as the chick immune system develops? A. T cells would recognize transplanted quail somites as foreign and rapidly divide. B. T cells would recognize transplanted quail somites as foreign and undergo apoptosis. C. T cells would recognize transplanted quail somites as self and rapidly divide.…A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Suppose that somite stem cells commit to their cell fates by three days post fertilization. Which result would be MOST likely in the chick embryos receiving somites transplanted in the reverse order? A. The organs arising from quail somites develop in a normal order because local signaling molecules appropriately pattern the developing organs. B. The organs arising from quail somites develop in a normal order because transcriptional programs activated in the nucleus cannot be reversed.…A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Observations of the developing chick embryo reveal that skeletal muscles develop from the transplanted somites even though motor neurons innervating those muscles arise from chick neural crest cells. Based on these observations, what is MOST likely true? A. Neural crest cells differentiate into somites. B. Neural crest cells fuse with developing somite cells. C. Neural crest cells develop from migrating somite cells. D. Neural crest cells send projections into developing…
- A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. As the somite cells develop into muscles, regular depolarizations in the muscles are required for the brain to properly form circuits with developing organs. Based on this observation, which prediction is MOST likely true? A. The muscles release neurotransmitters to stimulate the innervating neurons. B. The innervating neurons release neurotransmitters to stimulate the muscles. C. The muscles release hormones to stimulate the innervating neurons. D. The innervating neurons…Match the following statements to the type of gene they describe. ✓Encode proteins that promote cell cycle progression ✓Encode proteins that regulate cell cycle checkpoints ✓Mutations are loss-of-function and recessive ✓Mutations are gain-of-function and dominant ✓RB1 is an example of this type of gene A.proto-oncogene B.tumor suppressor geneWhich of the following play a role as cytoplasmic determinants in directing embryonic development?A. Transcription factorsB. Protein kinasesC. Protein kinase inhibitorsD. ?-cateninE. All of the above
- What statement best describes the difference between "fate maps" and "specification"? If cells are transplanted from their normal region in an embryo to a different region in a recipient embryo, such cells will alter their fate, but not their specification. Cell fate map describes the allocation of cells to the germ layers, ectoderm, mesoderm, or endoderm, whereas specification describes the exact tissues that each cell will ultimately become. The fate map of an embryo does not change during development -- the fate map of an egg is the same as the fate map of a late blastula -- whereas the specification map of an embryo changes continually as the embryo's development proceeds. The fate map of a cell is determined by labelling that cell and following it during normal development, whereas the specification state of a cell is determined by culturing a cell in an artificial medium and observing what tissues form from it.What process controls cell numbers during development? O Necrosis O Necroptosis O Apoptosis O Ferroptosis None of the aboveA researcher performs a tissue transplant experiment with an early Drosophila embryo. The researcher observes that transplanting tissue from the area of the embryo that normally becomes the head of the fly to the bottom part of an embryo does not alter the embryological development of that organism. What to conclude from that observation? This observation remains to be explained. The embryo does not produce sufficient survival factors to maintain the transplanted cells. The cell fate of the transplanted cells had not yet been determined. O The transplanted cells all activate the apoptosis response, and thus do not affect the developmental program.