At which of the following stages of development is a frog embryo composed of the most cells? Group of answer choices A. blastula B. neural tube stage C. gastrula D. zygote (fertilized egg)

Q: Which of the following is the correct order for the four developmental phases in animals? A.…

A: Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. With few…

Q: The following diagram is of the blastopore stage of embryonic development. Based on the information…

A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…

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: Which statement is true of Spemann’s organizer?a. It is unique to amphibian embryos.b. It arises…

A: Answer is a.)  it is unique to amphibian embryos.

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: Mrs. Robinson is comparing the embryos of parrot fish and salamanders. Although the adult organisms…

A: In evolutionary biology, a concept of common descent in which multiple species originate from a…

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: The outermost germ layer in a vertebrate gastrula is the____ . a. endoderm c. mesoderm b. ectoderm…

A: BASIC INFORMATION  FERTILIZATION  It is the process of the fusion of the male as well as the female…

Q: A gastrulation does NOT Select one: A. Consist of endoderm, mesoderm, and ectoderm B. Result in the…

A: In developmental biology, gastrulation is a stage early in the embryonic development of many…

Q: Development of an animal is controlled by the genes that are expressed during development. What…

A: Hox genes are members of the homeotic transcription factor family that play a key role in…

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: At what phase of development would a mouse embryo appear me similar to a chick embryo? Blastula…

A: THE STAGE OF DEVELOPMENTIS BLASTULA STAGE.

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: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

Q: Which of the following statements about gastrulation is correct? A. During gastrulation, the…

A: The embryonic development after 15 days of fertilization marks gastrulation.

Q: . In humans, identical twins are possible because(A) extraembryonic cells interact with the zygote…

A: The identical twins are also referred to as monozygotic twins. This occurs from the fertilization of…

Q: Which of the following is common to the development of bothbirds and mammals?(A) holoblastic…

A: Birds are any warm-blooded vertebrate of the class Aves. Birds have forelimbs modified into wings, a…

Q: All of the cell types of an adult vertebrate develop from three primary embryonic germ cell layers,…

A: The three germ layers: ectoderm, mesoderm, and endoderm give rise to various tissues. The ectoderm…

Q: Using the following list, describe the proper sequence for the events of animal development: 1.…

A: Animal development is occurs in sequential manner.

Q: Which tissue type or organ is correctly matched with its germ layer tissue? A) nervous–mesoderm B)…

A: Introduction :- The mesoderm is a germ layer that develops between the ectoderm, which produces skin…

Q: Which of the following statements relating to axis formation in chickens is FALSE? a. Henson's node…

A: A) true- Henson's node secretes proteins that antagonize BMPs and that protein is named as…

Q: The zona pellucida is important in mammals because it...

A: The zona pellucida is a thick extracellular layer that covers all mammalian eggs and preimplantation…

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: Muscles are formed by the Group of answer choices   A. ectoderm B. mesoderm C. endoderm

A: Muscle is defined as a group or collection of muscle tissues that contract collectively to create…

Q: what evolutionary advantages does the amniotic egg have? explain how each component of the egg plays…

A: Allow embryos to grow faster and to a greater extent before hatching. Animals are no longer reliant…

Q: What is the one defining characteristic that determines a mammal?

A: A) Well evolved creature, (class Mammalia), any individual from the gathering of vertebrate…

Q: Researchers searched for an activator of neural tissue formation. What is the real pathway for this…

A: In this question, from the given choices, we have to select the correct option for neural tissue…

Q: Read the following statements and choose the option with only correct statements. (a) Tympanum…

A: Tympanum is the membrane which separate external ear and internal ear. When sound waves rreaches…

Q: If you observed fruit flies with the following developmental abnormalities, would you guess that a…

A: Step 1 Homeotic genes are the master regulators genes that control the development of a particular…

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: What is NOT true about embryo development? A. a morula is an earlier stage than a gastrula B.…

A: Zygote is a structure formed by the fusion of male and female gamete. The stage of development of…

Q: What is a potential result of injecting notochord tissue into the ventral (bottom) region of the…

A: Option B

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: 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: Match the 3 germ layers with the specific structures they will develop into.   Question 10 options:…

A: The reproductive growth process takes place in three principal stages. The first two weeks after…

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 concepts of the following? 1, developmental anatomy 2, embryology 3,pre-embryology…

A: The reproductive cycle is a complex cycle that goes on in the sexually reproductive organisms like…

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: 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: What does Singer think is more valuable, a human embryo or the life of an ape? How does he justify…

A: Peter singer is a prominent australian philosopher currently at princeton university who many…

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: List down 3 differences and 3 similarities between the embryonic development of human & chicks

A: Introduction Embryogenesis is the process of initiating and developing an embryo from a zygote…

Q: Which of the following is not true about avian eggs? Choose all possible answers. a. exhibit…

A: In development biology, cleavage is the process (following fertilization) that involves a series of…

Q: explain the developmental processes that will happen to the fertilized ovum of a dog

A: The age at which dogs reach sexual maturity varies considerably. Smaller breeds appear to mature…

Q: Which of the following does a fate map of an embryo show? A. differences in developmental potential…

A: Introduction Fate mapping is a technique for determining the embryonic origins of diverse adult…

Q: Explain: Is the degenerating blastocoel visible in the frog gastrula? How much yolk protrudes…

A: Introduction :- In early mammalian embryos, a blastocoel is a chamber that is filled with fluids,…