Part IlI: Discussion 1. How can you distinguish an unfertilized egg from a fertilized egg? 2. As development proceeds from zygote to morula, what happens to the: a. number of cells? b. size of cells? c. size of the cell mass? 3. Construct a table listing the three germ layers of the gastrula and the major body portions formed from each layer.

Q: What happens to the embryo after week 8? Select one: a. All organ formation has completed, so the…

A: Fetal development within the womb is called prenatal development. It is a process that occurs in…

Q: Which of the following are derived from 'trophoblasts'? 1.  epiblast 2.  hypoblast 3.  amnion 4.…

A: After fertilization of the egg and ovum, they produce zygote that start developing by repetitive…

Q: 9. Name the stage of development represented by the three models. 10. The development stages…

A: Fertilization: it can be defined as the union of the nucleus of a sperm cell with the nucleus of an…

Q: The seven-day blastocyst: A. has a single layer of trophoblast at the embryonic pole B. has an…

A: The correct option is C.

Q: During the embryonic development, the trophoblast will develop into Select one: a. the yolk sac b.…

A: Embryonic development (embryogenesis) refers to the process by which an animal or plant embryo…

Q: Identify the characteristics of protostome development: Select one or more: O spiral cleavage…

A: Protostomes are organisms which shows formation of mouth before formation of anus during embryonic…

Q: Compare human and sea urchin development prior to and after the gastrula stage.

A: Gastrulation is, without a doubt, the most important evolutionary development in the animal kingdom.…

Q: what is the name of the structure where gastrulation begins in each animal below. Frog and fish has…

A: Gastrulation is the process of the formation of the child inside the womb, the complete development…

Q: Which if the following is true about the cleavage of Tunicates? Choose all possible answers…

A: Tunicates Tunicates are the invertebrate chordates, These are also known as Ascidians, these are…

Q: Mention four (4) important outcomes of gastrulation. Your answer must mention four concepts:(a)…

A: This question is about gastrulation.

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: The muscular system is the organ system that comprises of body's muscles. These muscles get attached…

Q: 4. Into what cavity does the blastopore open? The gastrular slit? What becomes of each? 5. Explain…

A: Introduction :  The initial gut that develops during the gastrula stage is called the archenteron.…

Q: The formation of three germ layers is called Select one: a. gastrulation b. pluripotency c.…

A: A zygote is the fertilized egg that is formed by the fusion of the egg and the sperm via the process…

Q: )Name four (4) structures / tissues that form from each of   the primary germ layers in the gastrula

A: Embryology is the study of development and growth of fertilized eggs(zygote) into mature embryos…

Q: Write the Patterns of embryonic cleavage and whole mechanism of cleavage. Write gastrulation in sea…

A: Cleavage is the division of cells in early embryo. There may be equal or unequal divisions.

Q: Gastrulation is the (a) formation of three germ layers by the epiblast at the primitive streak, (b)…

A: Introduction: The process occurring at the time of embryonic development that transforms the embryo…

Q: -3. The figure below shows cleavage stages in an embryo. From studying the photographs, what can you…

A: On fertilization, the zygote undergoes cleavage. That is the process of development of multicellular…

Q: Which of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The…

A: The fusion and amalgamation of the male spermatozoa with the ovum of the female are the…

Q: Name the three embryonic tissue layers of vertebrate embryos,and describe the process by which they…

A: Gastrulation is the cycle where differentiated cells from the zygote move to their particular areas.…

Q: Humans have three openings in an analogous place. Why is there a difference in the number of…

A: Hello! Since you have posted multiple questions we are answering only one question here as per the…

Q: 32. What stage of embryo development is this? 33. Name the structure

A: Developmental biology is the branch of biology in which the development of the organisms from the…

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: What's the difference between a zygote and a morula or a blastocyst?

A: Life starts from single cell called Zygote. Zygote is the single diploid cell resulted from the…

Q: Explain how the flat embryonic disc takes on the cylindrical shape of a tadpole.

A: The embryo is the first phase of the development of the offspring. The life cycle starts shortly the…

Q: Activity 19.8: Describe and state a function of each of the organ/structure. 1. Perimetrium 2…

A: 1.The perimetrium is the outer serous layer of the uterus. The serous layer secretes a lubricating…

Q: 3) List the stages of development once the egg is fertilized. (When a woman and a man have sexual…

A: Human embryonic development, or human embryogenesis, refers to the development and formation of the…

Q: 10. Draw and label a 14-day conceptus showing the chorionic sac, the chorionic cavity. Be sure and…

A: During the early stages of embryonic development, various structures and layers form within the…

Q: When does an embryo become a fetus? Select one: a. When gastrulation forms the three primary germ…

A: At the end of the 8th week after fertilization (10 weeks of pregnancy), the embryo is considered a…

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: What's the process of gastrulation in humans, how the embryo forms the three germ layers, and which…

A: The inner cell mass which is known as Blastula is now grown into a cell mass known  Gastrula and…

Q: Label each tissue with the specific source germ cells: v Gastrointestinal tract A. Intermediate…

A: We are tripoblastic organisms that means we contains three types of germ layers that includes…

Q: Is there a region of the blastocoel wall that is already committed to becoming the ventral side of…

A: A blastocoel also called blastocyst cavity which is a fluid-filled cavity forms in the blastula of…

Q: How is the process of gastrulation accomplished in mammalian embryos?

A: In developmental biology Gastrulation is the process that take place in the early embryonic…

Q: Discuss the Distinguish the formation of cleavage snails embryos. 2. Distinguish the formation of…

A:

Q: 40. A 9-month-old boy is brought to the office for a follow-up examination. He has had six episodes…

A: Parathyroid gland is located at the back of the thyroid glands located in the neck region.…

Q: The development of a zygote into a baby involves pre-embryonic development for the first 2 weeks,…

A: Introduction: Prenatal development occurs in three major phases. The first two weeks following…

Q: Is the sulcus limitans present at the 72-hour stage? State the derivatives of the sacculus and

A: Embryo development is a process that occurs after the process of fertilization has occurred and the…

Q: Which of the following is the latest stage of embryonic development (of this list)? blastula morula…

A: The development begins after fertilization which involves formation of zygote. After this zygote…

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: An embryo forms from the zygote and a zygote develops from the fusion of male and female gametes.…