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: 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: 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: 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: -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: 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: 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: 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: 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…