Q: ......... is not developmental event in human and frog. After fertilization rapid cycle of…
A: Fertilization is the event that marks the fusion of the female and male gamete which leads to the…
Q: Give the differences between mammalian and frog oogenesis. OOGENESIS MAMMAL FROG 1. 2. 3.…
A: The difference between the mammalian and amphibian (frog) oogenesis are as follows:
Q: Which statement below concerning oogenesis is FALSE? About half the oogonia complete mitosis between…
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Q: Which embryonic germ layer lines the outer surface of the embryo
A: An embryo is the early stage of human development in which organs form critical body structures.
Q: Gametogenesis in mammals is a complex process. When comparing spermatogenesis and oogenesis,…
A: 1. After the S-phase the spermatogonial stem cell contain 2n chromosome but the amount of DNA is 4C.…
Q: Stages in Development First trimester Second trimester Third trimester Match the developmental…
A: The growth of the baby inside the womb of the mother takes place in three trimester.First trimester…
Q: Which of the following has three germ layers? (a) morula (b) gastrula (c) blastula (d) blastocyst…
A: Answer is b.) gastrula.
Q: Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and…
A: INTRODUCTION In the inner cell mass the bilaminar embryonic disc may formed two layers of…
Q: Which of the following are functions of mitosis? (select all that apply) asexual reproduction…
A: Mitosis is a process where a single cell divides into two identical daughter cells.
Q: Which of the following mammalian structures is derived from one of the extra embryonic membranes?…
A: Introduction An extraembryonic membrane is one of the membranes that aid in embryo development. Such…
Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…
A: The germ layers are an embryonic collection of cells that aid in the creation and development of…
Q: After the zygote undergoes several mitotic divisions, the resulting structure that implants in the…
A: Fertilization is the process in which gametes fuse to form a zygote. The zygote undergoes several…
Q: 1. Zygote 2. Morula 3. Oocyte 4. Fertilization 5. Clevage 6. Blastocyte The order in which…
A: The stages are as follows : Oocyte Fertilization zygote cleavage Morula Blastocye
Q: Which of the following scenarios does NOT describe an event that leads to the conceptions of twins?…
A: While twin pregnancies can occur by some coincidence, there are a few factors that may expand your…
Q: n the ventral surface of the embryo series of tissue blocks lateral to the neural tube a…
A: somures eventually differentiate into dermis, skeletal muscle, cartilage, tendons, and vertebrae.
Q: only symmetric cell division whereas oogenesis involves asymmetric cell division
A:
Q: Which of the following occurs to the blastocoel during Xenopus development? is replaced by the…
A: Xenopus It refers to the genus of highly aquatic frogs that are mostly found in the regions of…
Q: What similarities do the illustrations have? What are the differences? What trends do you see…
A: Comparing different embryonic stages of different animals is a tool that can be used to infer…
Q: In cleavage states what is blastomeres, 2-cell stage, 4-cell stage, and 8-cell stage.
A: The question asks to define the blastomere stage (2-celled, 4-celled, and 8-celled).
Q: The placenta is a strange, important and interesting tissue because: a. It is made of many cells…
A: Introduction: Placenta is an organ that develops during pregnancy and is found in the uterus. The…
Q: . In humans, identical twins are possible because(A) extraembryonic cells interact with the zygote…
A: The identical twins are also referred to as monozygotic twins. This occurs from the fertilization of…
Q: What parts are persistent throughout the development of the embryo? Why are these present in all the…
A: The fitness of the organism depends on the early stages of embryonic development, which include…
Q: 4. Sarcomas and hematopoietic cancers are both derived from which germ layer? A. Ectoderm B.…
A: "Cancer" is a fatal disease that has both physical and mental consequences for a person. Cancer can…
Q: Which of the following correctly identifies the different phases of human development? Select one:…
A: Human development It is the process of development of the human body , which begins with the…
Q: In this picture which letter represents the chorion? Embryo D Mother's blood vessels G OE O o o
A: The chorion is the outer membrane surrounding the developing embryo in amniotes. It originates from…
Q: By the end of gastrulation the [Select] * has surrounded the outside of the embryo, the [ Select ]…
A: Gastrulation refers to the process by which a gastrula is formed from a blastula. Grastrula is the…
Q: What is the purpose of the placenta? Which part of the blastocyst eventually becomes the fetal…
A: Introduction An organ that grows in the uterus during pregnancy is the placenta. A developing…
Q: You separate the blastomeres of a four-cell animal embryo and discover that each cell| develops into…
A: The cleavage is the cell division pattern in early developmental phases. It is slightly different…
Q: Match the terms in column A with the descriptions in column B. Column A a. blastocystb. chorionic…
A: Developmental Biology is the field of biology that studies the processes by which multicellular…
Q: Among the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL…
A: Introduction Embryonic development is also called embryogenesis. It is the process where development…
Q: All of the following are true about humans EXCEPT: A. our zygote and early embryo cells have…
A: Introduction :- A zygote is a eukaryotic cell created when two gametes fertilise each other. The…
Q: Which of the following is true about Cleavage? Choose all possible answers a. At the end of…
A: Cleavage is the process of cell division in the developing embryo following fertilisation in…
Q: In embryos with spiral cleavage the 4d cell gives rise to which germ…
A: INTRODUCTION Mesoderm It is a germ layer formed during gastrulation. Present between ectoderm and…
Q: If an embryo was lacking HOX genes many problems might happen including this.. neural crest would…
A: The Hox genes' function in the embryo is to specify positional uniqueness instead of the formation…
Q: Animal Reproduction and Development Directions: Write the correct term in the boxes to the right of…
A: The biological process by which new individual organisms "offspring" are formed from their "parent"…
Q: From which of the following is the embryo developed? Trophoblasts Inner cell mass Blastocoelen…
A: Embryo is formed from the zygote and zygote is formed by the union of the male and female gametes.…
Q: Tabulate five (5) differences between frog and mammalian ovaries, and three (3) differences between…
A: Characteristics Frog Mammal Ovary The Frog ovary, which contains six or more central, hollow sacs…
Q: In the blanks below, identify the essential developmental process (NOT developmental stage)…
A: The every organism's embryo undergo the different developmental stages so that all the structures…
Q: The folding of ectoderm on the top of the embryo during organogenesis produces...? Group of answer…
A: In humans, the folding of neuro-ectoderm gives rise to one of the most important structure i.e…
Q: -4. In the diagram below, the stages of development in a frog embryo are NOT arranged in the correct…
A: Gastrulation is the process where the blastomere cells undergo dramatic movements that leads to…
Q: Which of the following correctly lists the germ layers of an embryo? O A. exoderm, mesoderm,…
A: Step 1 Embryonic development or embryogenesis is the development of the embryo from the fertilized…
Q: Which of the following rows correctly identifies a difference between blastocysts and morula? Select…
A: In fertilized egg, the egg undergoes repeated cell division which occurs rapidly to form a…
Q: An egg cell originally comes from an unspecialized diploid cell called a(an)… Group of answer…
A: The process of formation of egg cell(ovum) is called as oogenesis. The process of oogenesis occurs…
Q: Which of the following statements is NOT correct about the umbilical cord? a. The umbilical cord…
A: There are 4 extraembryonic membranes that support the growing embryo namely the Yolk sac, Allantois,…
Q: If there are 400M ovum/egg cells in a 1point woman's body, how many primary oocytes are there during…
A: An oocyte is essentially an immature egg. Oocytes becomes mature within follicle. These follicles…
Q: Which statement below concerning oogenesis is FALSE? About half the oogonia complete mitosis between…
A: Oogenesis refers to the process of the formation of the female gametes inside the women. The process…
Q: After the eighth week of development an embryos is referred to as what?
A: After the 8th week of development, the embryo is referred to as "fetus"
Q: Which of the following statements regarding the formation of human twins is INCORRECT? a. Nearly…
A: Twins can either be monozygotic or dizygotic and hence identical or not. They may share identical…
Q: Which of the following is not true about frogs eggs and blastula formation? Choose all possible…
A: In the blastula stage of development , a blastula contains large yolk filled cells at the vegetal…
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- If an embryo was lacking HOX genes many problems might happen including this... neural crest would not undergo EMT neural progenitors would never form neurons would not form axons The rhombomeres would not form | If a fetus was exposed to a teratogen during week 16, this type of birth defect could be the most likely to occur. congenital heart defect cleft lip and palate limb defects central nervous system defect--------------- A. Answer the following questions briefly (3-5 sentences only).1. How are the three axes for symmetry in the animal bodies established?2. Explain how the different germ layers give rise to different tissue types.3. Explain the role of axis formation in development B. write down the autapomorphic traits for the c3, c4, CAM plants and include their distinct environments Link: https://www.nature.com/scitable/knowledge/library/the-ecology-of-photosynthetic-pathways-15785165/What are morphogens, exactly? Explain how they affect the patterning of tissue throughout embryonic development. Give 4 concrete instances to back up your claims.
- +Describe the process of implantation of the embryo, what cells are involved and their roles. +Describe placentationEarly Embryonic Development Match the following terms to the descriptor. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice. Organogenesis Hollow ball of cells Gastrulation Formation of organs Cleavage Rapid cell division Cells rearrange themselves into layers BlastulaWhich choice below shows a correct order of events during development? Gastrula, blastula, neural tube closure, and primary vesicle formation. Blastula, neuroepithelial cell proliferation, axonogenesis and synapse maturation. Gastrula, dendritogenesis, neural tube closure and synapse formation. Neural tube closure, notochord formation, dendritogenesis and synapse formation. Axonogenesis, neuronal migration, synapse maturation, synaptic specialization
- There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?Order the events leading to the sperm's nucleus fusing with the egg's nucleus. Question 1 options: sperm's nucleus is released into the egg's cytoplasm sperm burrows through the orona radiata sperm's nucleus and egg's nucleus fuse sperm's cell memrbane fuses with egg's cell membrane sperm's acrosome enzymes burrows through the zona pellucida the zona pellucida changes so that any new sperm's acrosome cannot burrow through the zona pellucidaState and explain 5 effects of tobacco smoking by a pregnant mother on the foetus development. (400 words) Identify and explain 5 disadvantages of In vitro fertilisation (IVF) as an intervention to have a baby. (400 words) Why is breast feeding in the first 3month of a baby very important? (200 words) Higher animals undergo sexual reproduction despite its complexity, why. Give 5 reasons. (400 words) Describe five changes that occur in a flower after fertilisation. (200 words)
- There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Egg-binding proteins on the sperm cell surface bind to molecules on the egg cell membrane. What happens to the chromosomes of the sperm and egg? The sperm cell membrane fuses with the egg plasma membrane, allowing the sperm nucleus and centriole to enter the egg cytoplasm. What is the purpose/role of the centriole during fertilization? The final event would be when the egg and sperm pronuclei migrate toward each other in preparation for syngamy. What is the purpose of reproduction?A human is a complex organism that develops from a zygote. Briefly explain some of the the steps in this development process in the form of a paragraph. In your answer, be sure to: 1) explain how a zygote formed, 2) compare the genetic content of the zygote to the body cells of the parents, 3) identify the structure in which embryonic/fetal development usually occurs within, and 4) identify the structure that forms, which provides nourishment and waste removal to/from the developing baby.Figure 27.5 If a Hox 13 gene in a mouse was replaced with a Hox 1 gene, how might this alter animal development?
