oblast becomes the: ___________________ 2. The hypoblast becomes the: ____________________ Provide the name of the structure that is where gastrulation begins in each animal model. In the case of the frog and fish, this structure is known by two different names – there is a space below to provide each name. 1. Xenopus (frog): ___________________ 2. Xenopus (frog): ____________________ 3. Zebrafish: ____________________ 4. Zebrafish: ____________________ 5. Mammals: ____________________

Q: Fill in the blank:  _________________ is the phase of development during which cellular divisions…

A: The multicellular organisms develop from an early stage called an embryo. Embryonic development…

Q: Which of the following situations is the result of epistasis? a A mouse has black fur, black eyes,…

A: All the organisms have a hereditary currency. This currency is the gene. Genes are present in the…

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: 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: Match up the following components of the cortical blood-brain barrier with their developmental…

A: The blood-brain barrier is an important feature of the human central nervous system. It constitutes…

Q: Milk production in the mammary glands is stimulated by a hormone from the pituitary gland…

A: Pituitary gland is a small pink coloured gland. Morphologically pituitary has three parts namely…

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: A woman gave birth to her baby at 26 weeks. Upon delivery, the doctor noticed that the baby showed…

A: Ans.1  Respiratory distress syndrome when there is not enough surfactant in the lung. Surfactant is…

Q: Construct a Table to show the differentiation of the Germ Layers: ( It is a known fact…

A: Introduction The process of forming and developing an embryo from a zygote or a somatic cell is…

Q: Positive feedback mechanism initiates the rhythmic contractions of labor. Determine the hormones…

A: Homeostasis is a condition in which the human body is maintained in a steady state by changing or…

Q: Questic Immature connective tissue is known as :

A: Tissue consists of group of cells which are similar in origin, structure and function. There are…

Q: Observations of the developing chick embryo reveal that skeletal muscles develop from the…

A: The neural crest is often termed the fourth germ layer. It develops from the neural tube from the…

Q: developing

A: Following the formation of blastula, the blastomeres undergo dramatic movements that change their…

Q: QUESTION 5 Match the term to the correct description. + Blastomeres A. Small cells formed during…

A: Match the term to the correct description.

Q: Suppose an auto accident had fractured a pregnant woman’s sphenoid bone and severed the pituitary…

A: The skull base is a main and dynamic bone structure in the skull that serves as the base of the…

Q: Identify five (5) differences between frog and mammalian ovaries. Ovary Characteristics Frog…

A: Mammals, which include humans, are warm-blooded creatures having hair and vertebrates, or…

Q: If the whole ectoderm is exposed to high levels of BMP activity, which of the following ectodermal…

A: The succession of significant biological changes linked with growth, information transmission, and…

Q: About 2 weeks after birth, a neonate began to vomit shortly after feeding. Each time, the vomitus…

A: Vomiting in neonates is common and most of the time it is insignificant or unimportant. Vomiting in…

Q: In insect embryonic development, the fertilized egg nucleus divides repeatedly giving rise to…

A: Embryonic development in insects The period of development of embryo starts at fertilization and at…

Q: Fill in the first missing blank and check the rest to make sure they are correct.

A: Refer to the answer for the explanation. Correct answer is marked with bold letters.

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: The cluster of developing cells from conception birth is called an

A: Introduction: In sexual reproduction the fusion of male and female gamete is fertilization.

Q: From what you know about embryonic development, do you think that a cell from the inner cell mass or…

A: The outer germ layer from which the nervous system is derived during embryonic development is called…

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: after two weeks? Select one: Oa. First Three Days After Two Weeks Endometrium Amnion Ob. First Three…

A: Answer. Histologically, the uterus consists of three layers of tissue: Perimatrium, myometrium, and…

Q: The atriums are the A. Lower chambers of the heart B. Upper chambers of the heart C. Receives…

A: In vertebrates, the atrium collects blood into the heart and pushes it into a ventricle chamber, for…

Q: The placentaa. develops from the trophoblast.b. allows maternal blood to mix with embryonic blood.c.…

A: After fertilization of the zygote, the cell begins to divide, forming the blastocyst. It is at 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: Question 2 of 10 Question 2. If an embryo that contains neural crest cells that are migrating from…

A: Neural crest cell migration is required for the proper development of the body of a fetus. It is…

Q: 1. What are your understanding of the developmental history of a frog. 2.Discuss the process and the…

A: answer 1) The development history of a frog consists of it a life cycle. Frogs are amphibians ,…

Q: What is/are major tissue that develops from ectoderm (select all correct answers)? O Nervous system…

A: During sexual reproduction, a haploid sperm fuses with a haploid egg to give rise to a diploid…

Q: Which of the following is not derived from the ectoderm? a. adrenal medulla b. epidermis of skin c.…

A: The cell is known to be the fundamental unit of all life forms. Those who are similar in functions…

Q: In the development of amniotes (reptiles, birds, mammals), the defining feature of gastrulation…

A: Answer is : primitive streak The beginning of gastrulation is marked by the appearance of a groove…

Q: A friend of yours, who is 5 months pregnant, knows you've been studying growth and development. She…

A: X ray is radiology examination of body area, were ionizing radiation are used. As of you know every…

Q: What kind of cell is indicated by the pointer? OA. red blood cell OB. cuboidal cell OC. fibroblast…

A: The labelled cell is a FIBROBLAST A fibroblast is a particular kind of cell that helps contribute to…

Q: Name some derivatives of the neural What is the lamina terminalis

A: Q1. Neural Crest: Neural crest cells are a type of transitory cell that arises from the embryonic…

Q: Fill up the question correct asap

A: Connective tissue refers to the tissue that supports, connects, separates, or combines with other…

Q: During embryonic development 2 mammary cords appear on the surface of the ventral skin. Along these…

A: Mammary cords are structures that appear during embryonic development on the ventral skin. They…

Q: A. In order to create an embryo from a somatic cell, the donor egg cell must have its…

A: Cloning is the production of progeny from a single parent.

Q: The __________ arteries are the blood vessels of the heart, responsible for nutrient and O2…

A: According to the question, we have to explain and fill up the blanks as given above. So, let us have…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.