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21. 22. ( 23. 24. C 25. 26. 27. 28. 9. C If a frog zygote has ß-catenin mutation, the embryo will (a) develop normally. (b) become ventralized. (d) become none of the above. Each cell division in mammals during early embryogenesis takes approximately (c) become dorsalized. (a) 8 minutes. (b) I hour. (c) 5 hours. Early mammalian embryo cell division shows marked asynchrony. So odd numbered cells occur at early stage. (d) more than 10 hrs, (a) True, (b) False. The number of cells at the stage of morula in mammalian embryogenesis is (a) 2. (b) 4. (c) 8. (d) 16. The ICM (inner cell mass) is the external cells of morula. (a) True. (b) False. During human embryogenesis, blastocyst gives rise to trophoblast. (a) True. (b) False. The immediate recipient of the Hippo signal in the mouse blastocyst is (a) Yap. (b) Lats. (c) Tead4. (d) Cdx2. The signaling in question 27 occurs in the inner cells only. (a) True. (b) False. One enzyme that has been identified to help blastocyst coming out of the zona layer is (a) Gurken. (b) PKC. (c) trypsin. (d) EcoRI. The species that is NOT a member of the arthropod group is (a) crustacean. (b) hexapods. (c) myriapods. (d) nematode. Micropyle is the only sperm entry point for Drosophila eggs. (a) True. (b) False. In Drosophila oogenesis, a single progenitor cell oogonium undergoes the following rounds of cell division to generate a cells from which an oocyte is to be selected: (a) 2. (b) 3. (c) 4. (d) 5. The future dorsal of the developing Prosophila comunei

21. 22. ( 23. 24. C 25. 26. 27. 28. 9. C If a frog zygote has ß-catenin mutation, the embryo will (a) develop normally. (b) become ventralized. (d) become none of the above. Each cell division in mammals during early embryogenesis takes approximately (c) become dorsalized. (a) 8 minutes. (b) I hour. (c) 5 hours. Early mammalian embryo cell division shows marked asynchrony. So odd numbered cells occur at early stage. (d) more than 10 hrs, (a) True, (b) False. The number of cells at the stage of morula in mammalian embryogenesis is (a) 2. (b) 4. (c) 8. (d) 16. The ICM (inner cell mass) is the external cells of morula. (a) True. (b) False. During human embryogenesis, blastocyst gives rise to trophoblast. (a) True. (b) False. The immediate recipient of the Hippo signal in the mouse blastocyst is (a) Yap. (b) Lats. (c) Tead4. (d) Cdx2. The signaling in question 27 occurs in the inner cells only. (a) True. (b) False. One enzyme that has been identified to help blastocyst coming out of the zona layer is (a) Gurken. (b) PKC. (c) trypsin. (d) EcoRI. The species that is NOT a member of the arthropod group is (a) crustacean. (b) hexapods. (c) myriapods. (d) nematode. Micropyle is the only sperm entry point for Drosophila eggs. (a) True. (b) False. In Drosophila oogenesis, a single progenitor cell oogonium undergoes the following rounds of cell division to generate a cells from which an oocyte is to be selected: (a) 2. (b) 3. (c) 4. (d) 5. The future dorsal of the developing Prosophila comunei

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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40. 21.C If a frog zygote has ß-catenin mutation, the embryo will (a) develop normally. Each cell division in mammals during early embryogenesis takes approximately (b) become ventralized. (c) become dorsalized. (a) 8 minutes. 22. ( (d) become none of the above. (b) I hour. (c) 5 hours. 23.( (d) more than 10 hrs. Early mammalian embryo cell division shows marked asynchrony. So odd numbered cells occur at early stage. (a) Truc, (b) False. 24.C The number of cells at the stage of morula in mammalian embryogenesis is (a) 2. (b) 4. (c) 8. (d) 16. 25. C The ICM (inner cell mass) is the external cells of morula. (a) True. (b) False. 26. C During human embryogenesis, blastocyst gives rise to trophoblast. (a) True. (b) False. 27. The immediate recipient of the Hippo signal in the mouse blastocyst is (a) Yap. (b) Lats. (c) Tead4. (d) Cdx2. 28. ( The signaling in question 27 occurs in the inner cells only. (a) True. (b) False. 29. C JOne enzyme that has been identified to help blastocyst coming out of the zona layer is (a) Gurken. (b) PKC. (c) trypsin. (d) EcoRI. 30. The species that is NOT a member of the arthropod group is (a) crustacean. PARA (b) hexapods. (c) myriapods: (d) nematode. 31. Micropyle is the only sperm entry point for Drosophila eggs. (a) True. (b) False. 32. ( In Drosophila oogenesis, a single progenitor cell oogonium undergoes the following rounds of cell division to generate a group of cells from which an oocyte is to be selected: (a) 2. (b) 3. (c) 4. (d) 5. 33. The future dorsal of the developing Drosophila oocyte is determined by the location of the oocyte nucleus. (a) True. (b) False. 34.0 Gurken interacting with the following receptor at the dorsal of the developing Drosophila oocyte: (a) Pipe. The snake mutated Drosophila embryo develops (c) Torpedo. (b) Toll. (d) Snake. 35. (b) ventral cells only. (c) both dorsal and ventral cells. (d) none. 36. ( (a) dorsal cells only. JOne example of mesoderm specific genes for Drosophila embryos is (a) snail. (b) toll. (d) snake. 37. )In mouse embryos, the stage of compaction is the 16 cell stage. (c) torpeto. (a) Truc. (b) False. 38. From what's known, the elimination of the blastocoel in frog embryos can be a result of the depletion of (a) Wnt. (b) EP-cadherin. (c) Toll. (d) Gurken 39. ( (b) 10. (c) 16. In frogs, the mid-blastula transition (MBT) occurs around cell division # (a) 8. (d) 20. Frog mesoderm formation/induction starts when the following is formed: (a) blastocoel. (b) endoderm. (c) dorsal blastopore lip. (d) ectoderm.
Transcribed Image Text:40. 21.C If a frog zygote has ß-catenin mutation, the embryo will (a) develop normally. Each cell division in mammals during early embryogenesis takes approximately (b) become ventralized. (c) become dorsalized. (a) 8 minutes. 22. ( (d) become none of the above. (b) I hour. (c) 5 hours. 23.( (d) more than 10 hrs. Early mammalian embryo cell division shows marked asynchrony. So odd numbered cells occur at early stage. (a) Truc, (b) False. 24.C The number of cells at the stage of morula in mammalian embryogenesis is (a) 2. (b) 4. (c) 8. (d) 16. 25. C The ICM (inner cell mass) is the external cells of morula. (a) True. (b) False. 26. C During human embryogenesis, blastocyst gives rise to trophoblast. (a) True. (b) False. 27. The immediate recipient of the Hippo signal in the mouse blastocyst is (a) Yap. (b) Lats. (c) Tead4. (d) Cdx2. 28. ( The signaling in question 27 occurs in the inner cells only. (a) True. (b) False. 29. C JOne enzyme that has been identified to help blastocyst coming out of the zona layer is (a) Gurken. (b) PKC. (c) trypsin. (d) EcoRI. 30. The species that is NOT a member of the arthropod group is (a) crustacean. PARA (b) hexapods. (c) myriapods: (d) nematode. 31. Micropyle is the only sperm entry point for Drosophila eggs. (a) True. (b) False. 32. ( In Drosophila oogenesis, a single progenitor cell oogonium undergoes the following rounds of cell division to generate a group of cells from which an oocyte is to be selected: (a) 2. (b) 3. (c) 4. (d) 5. 33. The future dorsal of the developing Drosophila oocyte is determined by the location of the oocyte nucleus. (a) True. (b) False. 34.0 Gurken interacting with the following receptor at the dorsal of the developing Drosophila oocyte: (a) Pipe. The snake mutated Drosophila embryo develops (c) Torpedo. (b) Toll. (d) Snake. 35. (b) ventral cells only. (c) both dorsal and ventral cells. (d) none. 36. ( (a) dorsal cells only. JOne example of mesoderm specific genes for Drosophila embryos is (a) snail. (b) toll. (d) snake. 37. )In mouse embryos, the stage of compaction is the 16 cell stage. (c) torpeto. (a) Truc. (b) False. 38. From what's known, the elimination of the blastocoel in frog embryos can be a result of the depletion of (a) Wnt. (b) EP-cadherin. (c) Toll. (d) Gurken 39. ( (b) 10. (c) 16. In frogs, the mid-blastula transition (MBT) occurs around cell division # (a) 8. (d) 20. Frog mesoderm formation/induction starts when the following is formed: (a) blastocoel. (b) endoderm. (c) dorsal blastopore lip. (d) ectoderm.
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