1. After receiving the SR signal, stem cells in the developing organism will have an increased potential to specialize. The __ genes, when expressed, enable these embryonic stem cells the capacity to differentiate. A. SR B. Skin Diff C. ID D. Neural Diff E. DIV F. DET Please answer in short and ASAP .
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- 1. Match each of the terms in the left column to the bestfitting phrase from the right column.a. epistatic interaction 1. divide the body into identical units(segments)b. regulative 2. initiated by binding of ligand todetermination receptorc. modifier screen 3. individuals with cells of more thanone genotyped. RNAi 4. the fate of early embryonic cells canbe altered by the environmente. ectopic expression 5. assign identity to body segmentsf. homeodomain 6. substance whose concentrationdetermines cell fatesg. green fluorescent 7. suppression of gene expression byprotein double-stranded RNAh. genetic mosaics 8. method for identifying pleiotropicgenesi. segmentation genes 9. a DNA-binding motif found incertain transcription factorsj. homeotic genes 10. encode proteins that accumulate inunfertilized eggs and are needed forembryo developmentk. morphogen 11. double mutant has phenotype of oneof the two mutantsl. maternal effect 12. a gene is turned on in an inappropriategenes tissue or at…Which 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 aboveWhich of the following does a fate map of an embryo show?A. differences in developmental potential between cellsB. to what tissues cells will contribute later in developmentC. where key signaling centers are locatedD. differences in developmental competence between cells
- 1. During the formation of the limb bud, the components of the zeugopodium develop in the presence of: a. High concentrations of Fgf and low concentrations of Gli b. High expression of Hox genes 9 and 10 c. High expression of Hox genes 10 and 11 d. Intermediate concentrations of Retinoic Acid and Wnt e. Low concentrations of Retinoic Acid and Fgf f. a and b g. a and c h. c and d i. b and eMutations in the BRCA genes have been shown to be related to a higher incidence of breast cancer in humans, and genetic tests are available that enable women to discover whether they carry versions of the gene associated with high risk. However, even early detection of breast cancer does not guarantee a cure. What considerations can you think of for and against advising women to take the tests? ·A. CRANIAL (CEPHALIC) NEURAL CREST B. TRUNK NEURAL CREST C. VAGAL AND SACRAL NEURAL CREST Trace their differentiation pathways from the time the precursor cells break away from the neural tube. Make sure that this three (3) derivatives utilize different migratory pathways.
- The following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. Death of some lymphocytes. What concept? Question #2. There are two sets of organizing centers in insect egg. What concept?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 motherThe following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. During the cleavage stage, the masked messenger RNA from the developing oocyte controls the cleavage patterns. During the blastula stage, specific genes are activated; hence there is appearance of new proteins. What concept? Question #2. Catfish collected in the polluted waters of Pampanga River were found to have ruptured and vascularized brain. What concept? Question #3. Stem cell technology is based on the principle that an undifferentiated cell is totipotent. What concept?
- The following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. The intestine is derived from the endoderm. What concept? Question #2. Metamorphosis in frog. What concept? Question #3. An endodermal cell taken from a late gastrula stage grafted in the region of the ectoderm developed into stomach. What concept?The following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. A committed cell follows strictly its developmental pathway no matter what. What Concept? Question #2. A lot of our nerve cells degenerate so that the nuerotropic factors which is critical survival factor would be enough to sustaint he development of the entire organism. What concept? Question #3. The paternal and maternal genes. What concept?Describe the effects of FGF and RA on each other in limb bud development. Give a specific example of their effects on each other in this capacity. Knowing this, propose a question/hypothesis to investigate the mechanism of how a specific morphogen controls pattern if you know that the morphogen is both necessary and sufficient AND is expressed in the correct spatial/temporal frame.