''Because of the many later developmental trans-formations that produce the elaborately structured organs, the body plan set up during gastrulation bears little resemblance to the body plan in the adult.'' Explain why or why not.

Q: Discuss the process of gastrulation and embryonic folding?

A: Gastrulation is the process of cell relocation and distinction into three primary germ layers…

Q: hy is it that the first trimester of pregnancy the most critical in humans? How will you relate it…

A: It is the early phase of pregnancy. The first trimester is marked as 1st day after your last period…

Q: How do the shape and structure of the uterus of the fetal pig compare with that of the human?

A: Reproductive system is used for the sexual reproduction. Female internal reproductive organs include…

Q: How do the location and the relative size of the bulbourethral glands of the fetal pig compare with…

A: Reproductive system is used for the sexual reproduction. Female internal reproductive organs include…

Q: elaborate on the relationships between the three germ layers in forming the mouth and facial…

A: The three main layer of body parts are ectoderm ,mesoderm and endoderm . We know that mouth is…

Q: What will guide them to make the right decision?  Do they have a choice?

A: Answer: 1.trophobalst or icm if cells choose to become they will end up in the placenta and if they…

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: -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: A human is a complex organism that develops from a zygote. Briefly explain some of the the steps in…

A: Reproduction is the process by which organisms multiply through sexual and asexual modes. It is one…

Q: At what stage uteroplacental circulation started?  a.Maternal blood entering the lacunar  b.Embryo…

A: The uteroplacental circulation is a circulatory framework where two circulation systems, the fetal…

Q: 5. In the Diagram to the left for each of the abeled ayer. (ectoderm, endoderm or mesoderm) organs…

A: During the process of gastrulation three embryonic layers are formed by which different organs and…

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: What are the cells producedin the first stage of theembryonic developmentcalled?

A: The process in which the embryo forms and develops is known as embryonic development.

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: 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: Explain the developmental and functional similarities and differences between:   1. Avian yolk…

A: Three fetal membranes are present in mammals; yolk sac, amnion, and allantois. Yolk sac and…

Q: When viewing a 14-day old human embryo, could you identify the cranial and caudal ends? If yes,…

A: Gastrula is a three layered structure which transforms blastula into a complete organisms.

Q: Explain the eccentric position of the early frog blastocoel. (min. 5 sentences)

A: A zygote is formed during the embryonic development that occurs when the egg is fertilized by a…

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: Which statements are true? Explain why or why not.1 In the early cleavage stages, when the…

A: The science of structure and function of cell is known as cell biology, and it is based on the idea…

Q: Are the extraembryonicmembranes the same in allvertebrates?

A: An embryo is an early phase development for an unborn baby. A small fertilized egg divides and grows…

Q: After fertilization a developing embryos goes through several changes. At about 2-3 days, what is…

A: During fertilization the haploid gametes, that is, sperm from a male and secondary oocyte from…

Q: what is celluar cleavage thats occur in the early stages of development?

A: The development of an embryo is characterized by the process of cell division and cellular…

Q: 4. As the embryo develops, what do the amnion and the yolk sac become, respectively? a. A sac that…

A: The amnion is filled with the amniotic fluid due to which the amnion expand and provides protection…

Q: How did we discover that selector genes specify which adult structures will be formed by body…

A: Homeotic genes- Homeotic genes or the selector genes are the key regulatory genes in the formation…

Q: what is the process which involves in the self-destruction of cells in the developing embryo as…

A: Ans: The process which involves the self destruction of cells in the developing embryo is very…

Q: In the 33 hr. chick embryo stage what structure/s would serve as a guide to approximately…

A: Auditory vesicles are distinct. Three pairs of arterial arches arise from the ventral aorta. Somites…

Q: Epithelium-Mesenchyme transitions (MET or EMT) are crucial morphogenetic events occurring during…

A: During EMT transition  there is loss of cell polarity as well as adhesion property of epithelial…

Q: How is the yolk formed in terms of embryogenesis

A: Embryogenesis is the course of improvement of an undeveloped embryo from the zygote. In…

Q: List and describe some developmental anomalies associated with gastrulation.

A: The term gastrulation basically address the early development of embryo from 1-D layer of epithelial…

Q: Fertilization: a) Briefly describe the process of fertilization in humans, b) identifying key…

A: Sexual reproduction is the process by which new young ones are produced, by fusion of the genetic…

Q: n your own words: Expound how the mass of inert yolk influences gastrulation in amphibians,…

A: In evolutionary biology, evolutionary developmental biology is considered a new norm. It developed…

Q: D E Figure 42.11 Use the figure above showing human embryonic developmental day 14 to ans The…

A: Embryo is pre birth stage. It is formed just after fertilization and is followed by fetal stage. It…

Q: Which of the following statements is false? a. Cadherins, but not integrins play a role in…

A: Fertilization takes place when the nucleus of the sperm fuses with nucleus of the eff. A zygote is…

Q: 7. The human female reproductive system is represented below. What structure represents the site of…

A: The parts of the human female reproductive system consist of- Ovaries or fallopian tube Uterus…

Q: In a developing chicken embryom, what is the fate of the postanal gut?

A: A postrectal extension of the embryonic hindgut to the cloacal membrane where the anal opening forms…

Q: Which statement does NOT accurately describe somites?   series of tissue blocks   form the ribs and…

A: Embryology is the study of development and growth of fertilized egg(zygote) into mature embryo. The…

Q: What are the types of eggs based on their yolk content? What patterns of cleavage will they undergo…

A: As per bartleby guideline we are suppose to answer only 1 question. Please post the other question…

Q: Which statement relating to frog gastrulation is INCORRECT? a. A second set of bottle cells…

A: Embryonic development refers to the division in zygote and growth that ultimately goes through…

Q: How many follicle cells will fit inside? Is there an abundance of yolk within the cytoplasm of the…

A: Oocyte It is an immature ovum or egg cell which is a female gametocyte or germ cell. It is involved…

Q: At a high level, animals can be placed into evolutionary groupings based on their pattern of…

A: The blastocyst is one the development embryonic stage of higher animals. Blastocyst has a cavity…

Q: What are the 4 major events comprising the process of fertilization?

A: Note: As Per Bartleby Guidelines only one question is answered. For further answers repost the…

Q: How can matter alone construct itself into the organized tissues of the embryo?

A: The embryo is the development stage in multicellular organisms. The development of the embryo begins…

Q: Describe the body wall of the 55-hour chick embryo.

A: Embryo:- An embryo is a eukaryotic organism's early developmental stage after an egg (produced from…

Q: What are the three main cell types formed during gastrulation? Give examples of which tissues are…

A: gastrulation is a stage of embryonic development where gastrula is formed from single layer…

Q: To what extent has mesoderm migrated in the blastoderm of the 24 hour chick embryo

A: After twenty-one days of incubation, a chick emerges from a fertile egg. On the surface of the yolk,…

Q: A. What are the cell movements (ex. Epiboly, involution, etc.) involved in human gastrulation?…

A: Gastrulation is the stage in embryogenesis where three germ layers are formed.