Q: Write notes on holometabolous development
A: Metamorphosis is the biological mechanism by which an animal physically develops after birth or…
Q: The brain and spinal cord develop from a longitudinal ectodermal channel called the _____.
A: Brain and the spinal cord consists of the central nervous system of the body and the nervous system…
Q: pathways during
A: Introduction : Oviposition :-It involves the deposition of the mature egg outside the body of the…
Q: Name the plasma membrane outside the mature ovum.
A: Reproductive system in context to human beings consists of primary sex organs that are also known as…
Q: Select all that help prepare the uterus for labor Unpregulation of oxytocin receptors Increasing…
A: Parturition is another term for labor. It refers to the physical expulsion of the placenta and fetus…
Q: Which of the following structures secretes the hormone that sustains the corpus luteum during the…
A: Corpus luteum is a temporary endocrine structure involved in ovulation and early pregnancy. The…
Q: What cells are seen in the mucous connective tissue of the umbilical cord
A: The umbilical cord is a tube that connects you to your baby during pregnancy. It has three blood…
Q: Name the third tier of embryonal cells in pinus formed.
A: All plants come under the kingdom Plantae. They are eukaryotes, multicellular, and having cell…
Q: Differentiated Differentiated cells in a developing embryo derive from
A: The development of an embryo occurs in different layers. Every cell in the body have different…
Q: Describe the two main processes that cause embryonic cells to headdown different pathways to their…
A: The fate of an embryonic cell refers to its future identity, or the identity of its daughter cells…
Q: Somites, in the embryo, give rise to muscle. Is the statement above true or false?
A: Somites are found around neural tubes in the embryonic stage of a vertebrate. Somites are made up of…
Q: What is the cell divisionduring the first stage of theembryonic developmentcalled? How is this…
A: The process by which a parent cell divides into two identical daughter cells, is called Cell…
Q: With respect to implantation, penetration of the luminal epithelium by the trophoblast is…
A: The crucial step for development of a human embryo inside the womb of a woman after the…
Q: Identify the structures of an egg and a sperm that aredirectly involved in fertilization.
A: Fertilization is that the method by that the male and also the female gametes (sperms and therefore…
Q: give the Significance of the ff Cleavage to embryogenesis CAMs and Junctional…
A: * cleavage means division of cells in embryo . * The cells formes as result of cleavage are…
Q: Umbilical cord contains A allantois B yolk sac C arteries veins
A: The umbilical cord is a stretchable, tubular structure which joins the fetus to the mother during…
Q: uss the role of the somites in developing a body pla
A: A body plan is defined as the basic shape of members of an animal phylum. In other words, we can say…
Q: Expand on the sentence "both activation and inhibition are involved in embryonic development."…
A: Embryonic development is also named as embryogenesis . There are following steps . The embryonic…
Q: In adults, new connective tissue cells originate from the Ectoderm Mesenchyme Endoderm Mesoderm
A: In the embryonic stage, the three primary cell layers are formed that give rise to various tissues…
Q: Describe the role of placental secretion of relaxin inpreparation for childbirth.
A: Hormones are the chemical substances released into the blood to perform specific functions of the…
Q: How might you begin to apply your understanding of cell-to-cell communication toward a more…
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Q: Make a TABLE (containing the summary) of the stages of emrbyonic development with each of the…
A: Embryogenesis is a process of development of the embryo from the zygote , the processes involved…
Q: Poor embryonic development occurs because ____________________________.
A: After fertilization, a single celled diploid zygote is formed, which later develops into…
Q: Which type(s) of embryological testing would you perform in order to determine the level of…
A: The process of formation of an embryo with the uterus is known as embryogenesis. It is a complex…
Q: The tertiany structure of a proteln is establised by.
A: Primary Structure of protein is a linear sequence of amino acids that is linked by peptide/amide…
Q: In the development of the nervous system, one of the following is false? The neural tube maintains…
A: The vertebrate nervous system is framed in embryos. neural plate: A thick, level bundle of ectoderm…
Q: As Cleavage stage of embryo genesis proceeds, the developmental potential of the cells becomes…
A:
Q: Contrast determination and differentiation in development
A: The main difference between cell determination and cell differentiation is that the cell…
Q: What are the significance of GAMETOGENESIS? State whether it is a Developmental phenomena or not,…
A: The major events of human reproduction are formation of gametes, cyclic changes in the female body…
Q: Describe features of the umbilical cord and the blood vessels it contain
A: In placental mammals, the umbilical cord (birth cord) is a tube between the developing embryo…
Q: What result would Jost have obtained if female development alsorequired a signal from the gonad?
A: Endocrine system is a regulatory system of ductless glands that secrete chemical messengers called…
Q: distinguish between hemimetablous and holometabolus development
A: Introduction: Metamorphosis is a biological process of the development of an animal. It involves…
Q: Define apical dominance
A: When a growing apical bud at the tip of the shoot inhibits growth of other lateral buds down the…
Q: Stem cells are considered pluripotent - instead of totipotent because they cannot become part of the…
A: The explanation for the choice of the question has been described in the following step,
Q: Explain in-vitro fertilization and embryo transfer in brief.
A: Introduction In this question we will explain in-vitro fertilization and embryo transfer.
Q: Describe the mechanism of development of this TPP in the
A: Tuberculin is a derivative which is derived from a purified protein, which is used in the diagnosis…
Q: The order in which the physiological stages occur during embryonic development is and
A: The fusion of haploid male gamete(sperm) and female gamete(egg/ovum) to form diploid zygotes is…
Q: Describe each stage of the development from fertilized egg to blastocyst stage
A: Fertilization is an important part of sexual reproduction. The nucleus of the male gamete or the…
Q: The ectodermal layer in the fetus will develop into:
A: Correct answer: Nerve and Skin (first option)
Q: Draw a well labelled diagram of human foetus attached to the umbilical cord.
A: The fetus is the unborn offspring of a mammal at the later stages of its development, from eight…
Q: Give the name of the structure that the phrase describes. The number of primary germ layers that…
A: The development of a human embryo is called embryogenesis, which starts with the fertilization of an…
Q: Name the membrane that protects foetus and secretes protective fluid.
A: Foetus is the growing and evolving embryo that has undergone organogenesis and is developing into a…
Q: Describe the role of master regulators in embryonic development
A: Embryonic development is the early stage in development when cells undergo division and the…
Q: the zygote is described as totipotent because it ultimately gives rise to all the cell in your body…
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Label the stages of somatic embryogenesis shown in attachment
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- Contrast determination and differentiation in developmentWhat are morphogens? Explain how they influence tissue patterning during embryonic development. Describe TWO specific examples to support your explanation.what is the process which involves in the self-destruction of cells in the developing embryo as shown in the disappearance of the embryo’s tail?
- Discuss the molecular players in myogenesis. Specify their role in the process.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.Describe the role of master regulators in embryonic development
- What is meant by the term “activation” in embryology?Identify the stem cells found in ovaries of a female embryo/fetusA 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. 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.…Discuss the role adhesion proteins play in the formation of the neural system, neural crest cells, and epithelial of the back in the developing embryo – neurulation.