Explain: Is the degenerating blastocoel visible in the frog gastrula? How much yolk protrudes through the blastopore of a frog gastrula How much yolk protrudes through the blastopore of a frog gastrula? Chickens lack a larval stage. How do they compensate for this?

Q: Draw and label the parts of the late neurula embryos of Amphioxus/echinoderm, amphibian,…

A: Adenohypophysis Endostyle Notochord Nascent somite Neurenteric Canal Pronephric Kidney

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: What are the archenteron and the blastopore? What is the stage of the embryonic development in which…

A: Gastrulation is the phase in the embryonic development of animals. During this phase, the blastula…

Q: The cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called…

A: The early stage in the development of the embryo is referred to as gastrulation. Gastrulation is a…

Q: Is the degenerating blastocoel visible in the frog gastrula?

A: FROG GASTRULA:         The initial stage of multicellular embryo comprises of two or more germinal…

Q: hat parts are persistent throughout the development of the sea urchin embryo? Why are these present…

A: A multicellular animal arises from a single cell a fertilized egg. During development ,the cell…

Q: During embryonic development, which type of cleavage pattern leads to the development of a bird?…

A: In developmental biology, embryonic development, also referred to as embryogenesis, is that the…

Q: What experimental evidence demonstrates that molecular gradients in the egg control development?

A: Morphogens:          A substance that standardize a graded distribution and elicit distinct cellular…

Q: Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and…

A: INTRODUCTION       In the inner cell mass the bilaminar embryonic disc may formed two layers of…

Q: With regard to early cleavage in the sea urchin, is the entire zygote involved in early cleavage

A: Introduction:- A sea urchin is a spiny marine creature with a globular body and a radial arrangement…

Q: Which of the following mammalian structures is derived from one of the extra embryonic membranes?…

A: Introduction An extraembryonic membrane is one of the membranes that aid in embryo development. Such…

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: Why are blastomeres in the pigmented part of the egg smaller and more numerous than in the…

A: The other terms associated with developmental biology include embryogenesis or embryology. This…

Q: Enumerate the types of morphogenetic movements employed by vertebrate embryos in gastrulation. Give…

A: Gastrulation is a process that takes place in the early developmental period. In this process 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: Which of the following rows correctly identifies the development of the germ layers? Select one: a.…

A: We need to find which of the four options gives the development of germ cells. Endoderm- It is a…

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: 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: Which of the following occurs to the blastocoel during Xenopus development?     is replaced by the…

A: Xenopus It refers to the genus of highly aquatic frogs that are mostly found in the regions of…

Q: O Occurs in protostomes and involves mesodermal tissue that is located in the space between the…

A: Ans- Occurs in protostomes and involves mesodermal tissue that is located in the space between the…

Q: What is the purpose of the placenta? Which part of the blastocyst eventually becomes the fetal…

A: Introduction  An organ that grows in the uterus during pregnancy is the placenta. A developing…

Q: Among the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL…

A: Introduction Embryonic development is also called embryogenesis. It is the process where development…

Q: All of the following are true about humans EXCEPT: A. our zygote and early embryo cells have…

A: Introduction :- A zygote is a eukaryotic cell created when two gametes fertilise each other. The…

Q: In the provided image (whole mount of 33-hour chick embryo), color the respective germ layers and…

A:

Q: Which choice below shows a correct order of events during development? Gastrula, blastula, neural…

A: Embryonal development consists of many stages and involves  Cellular division  Cellular…

Q: How does von baer's law of development relates with the development of the frog embryo? evidences?

A: Von Baer's laws of development These are rules proposed by Karl Von Baer. The laws demonstrates the…

Q: Compare and contrast the three types of mammals with respect to fetal development and birth: the…

A: Fetal development begins with implantation when the sperm fertilizes the egg. At this point, the…

Q: Write a brief description of one cellular level event that could go wrong during the gastrulation…

A: Gastrulation stage of a zebrafish embryo. The outer dashed line represents the epidermis, while the…

Q: What structures are derived from the ectoderm, mesoderm, and the endoderm?

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

Q: Explain further each number 1. Compare and contrast the sequence of fertilization events that take…

A: Fertilization is termed as the process of meeting of male gametes with female gametes. The male…

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 is the function of the Pax 6 gene in the mouse eye reference to HOX gene

A: During early embryonic development, homeodomain proteins regulate gene expression and cell…

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: n the early stages of amphibian development, what layer is involved in yolk digestion? What is the…

A: Embryonic development proceeds through these stages - cleavage, blastula, gastrulation, and…

Q: In the blanks below, identify the essential developmental process (NOT developmental stage)…

A: The every organism's embryo undergo the different developmental stages so that all the structures…

Q: Draw and label parts of whole mount of chick embrogenesis specimens of the following stages:…

A:

Q: Which of the following describes the importance of the formation of the morula in early human…

A: The fertilization leads to development of the first diploid cell which is called a zygote. By day…

Q: Question #1 What is importance of pharyngeal pouches in development? Question #2 What duct empty…

A: Bile is a type of fluid that is made and released by the liver. Bile is stored in the gallbladder.

Q: Which of the following rows correctly identifies a difference between blastocysts and morula? Select…

A: In fertilized egg, the egg undergoes repeated cell division which occurs rapidly to form a…

Q: What are homeotic genes and what is the “homeobox” contained in such genes? What is the function of…

A: A group of genes that control the pattern of body formation during the early development period of…

Q: IDENTIFICATION (Developmental Biology) Question #1. Refers to the arrangement of the mitochondria,…

A: Developmental biology deals with the study of development of multicellular organisms from single…

Q: What is the importance of the pharyngeal pouches in development? Discuss.

A: In embryology, pharyngeal pouch is defines as "any of a series of evaginations of ectoderm on either…

Q: oblast becomes the: ___________________ 2. The hypoblast becomes the: ____________________ Provide…

A: The  hypoblast become 1. extraembryonic mesoderm 2. Yolk sac

Q: In a chicken embryo, What is the double membrane separating the pharyngeal pouch and furrow?

A: The animal body is a very complex creature made up of several systems. Each system in the body has a…

Q: Which of the following is not true about frogs eggs and blastula formation? Choose all possible…

A: In the blastula stage of development , a blastula contains large yolk filled cells at the vegetal…