oogenesis.

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: ......... is not developmental event in human and frog.   After fertilization rapid cycle of…

A: Fertilization is the event that marks the fusion of the female and male gamete which leads to the…

Q: D А- -E B- C- OALL

A: Structural changes occurs in different stages of chick embryo.The 72 hour chick embryo shows the…

Q: 48-hour Chick Embryo Transverse Sections

A: 48 hour is the stage in which position of embryo considering with respect to the yolk changes…

Q: During what process does the amnion envelop theembryo?a. embryonic foldingb. gastrulationc.…

A: The amnion refers to a membrane, which closely envelops the embryo when formed initially. It gets…

Q: (SEE IMAGE) Label them properly! 72-hour Chick Embryo Transverse Sections

A: Hi! Thanks for your question. As you have posted multiple images, according to our company…

Q: Which of the following structures secretes the hormone that sustains the corpus luteum during the…

A: Corpus luteum is a temporary endocrine structure involved in ovulation and early pregnancy.  The…

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: ___________________ fluid protects the embryo from jarred movements and provides a watery…

A: The embryo inside the womb of the mother grows in a sac like bag called the amniotic sac.  It allows…

Q: Give the differences between mammalian and frog oogenesis. OOGENESIS MAMMAL FROG 1.     2.     3.…

A: The difference between the mammalian and amphibian (frog) oogenesis are as follows:

Q: Describe how the human blastocyst gives rise to the embryo and its extraembryonic membranes.

A: The fusion of male and female gametes form a zygote during fertilization.

Q: Compare and contrast between the following: (1) Medio-lateral intercalation and radial…

A: The layers of a human embryo, from innermost to outermost, are the endoderm, mesoderm, and ectoderm.…

Q: The _______ is an important structure for waste storage in birds and some mammals, but not in…

A: Extraembryonic membranes are the layers enclosing the embryo inside the uterus. There are four…

Q: Which of the following has three germ layers? (a) morula  (b) gastrula (c) blastula (d) blastocyst…

A: Answer is b.)  gastrula.

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: Cleavage produces daughter cells called ________.a. trophoblastsb. blastocystsc. morulaed.…

A: Cleavage is described as the procedure of cell division in early embryo to generate a cluster of…

Q: List and describe the phases of embryonic development; from a zygote through gastrulation.  What…

A: Reproduction is the process of the formation of offspring from their parents. There are two modes of…

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: In humans, implantation in the uterus occurs at whichstage of embryonic development?a. zygoteb.…

A: An embryo is an unborn offspring in the steps of development. It is part of the life cycle. It is…

Q: Birds, reptiles and insects have something in common as far as the development of their embryos.…

A: Answer :- Birds, insects and reptiles are higher vertebrate . All of these are developed from…

Q: A fertilized egg, also called a________ , is a very large cell. One of the first events of animal…

A: Answers are :   A fertilized egg, also called a zygote, is a very large cell. One of the first…

Q: In mammals, distinguish and differentiate the following germinal layers. Identify the organs that…

A: Introduction :- Mesoderm interacts with endoderm and ectoderm during organogenesis to give rise to…

Q: When the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrula

A: Sexual reproduction in humans includes a fusion of sperms and eggs to form a zygote.

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: Gastrulation in birds and mammal

A: Gastrulation is the process during embryonic development that changes the embryo from a blastula…

Q: What are the significance of ORGATOGENESIS. State whether it is a normal developmental phenomena or…

A: Answer: Introduction: Organogenesis is the mechanism in the three germ tissue layers of the embryo,…

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: The hypoblast layer of the blastodisc is made of cuboidal cells and forms during the fetal period. O…

A: After 4 -6 days of fertilization, the morula reaching the uterus form blastocoel and transform into…

Q: Give the differences between mammalian and frog ovaries with the format provided below

A: Mammalian- member of the group vertebrate animals which are young and which are nourished with milk…

Q: Explain the following terms: ectoderm, endoderm, mesoderm and stem.

A: Animal phylogeny is a rapidly changing field. The biologists mostly depend on the fossils to compare…

Q: Ectodermal Derivatives of the Developing Chick Embryo   A. 33-hour Chick Embryo Transverse…

A: 1. Neural  is situated in the region of or on the same side of the body as the brain and spinal cord…

Q: In human embryogenesis, how many hours does it take after fertilization to form the following; a.…

A: Embryogenesis  Embryogenesis refers to the stages of developing embryo. The embryogenesis start just…

Q: Directions: Arange in correct order the development of human embryo from fertilization until birth.…

A: Introduction Human embryonic development:-  It is a complicated process by which the fertilized egg…

Q: List a number of teratogens and how they impact prenatal development. Provide examples such as…

A: Teratogen is a substance that lead to birth defects in an embryo or fetus. As a baby grow in the…

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: A mammalian embryo puts the trophoblast into a hurried frenzy before it decides to proceed to the…

A: Trophoblasts refer to the cells that produce the external layer of a blastocyst. They can be seen…

Q: Based on what you know about the goal of gastrulation, suggests the direct developmental consequence…

A: Embryonic development is the process of development of an embryo.  Gastrulation is a process that…

Q: Describe the similarities and the differences between oogenesis and spermatogenesis. Provide enough…

A: Oogenesis and spermatogenesis are the process of formation of male and female gametes. The…

Q: Name the other two membrane except primary membrane present outside the mature ovum.

A: The egg cell is the female gamete and upon fertilization with the sperm forms the zygote. It is…

Q: fertilized ovum of a dog

A: (Canine) egg treatment  Ovulation in many bitches happens between 48-60 and 72 h from the beginning…

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: In amphibian gastrulation, are there any evidences of cephalization? Why or why not? (mi

A: Gastrulation: During gastrulation, cell movements result in a massive reorganization of the embryo…

Q: The folding of ectoderm on the top of the embryo during organogenesis produces...? Group of answer…

A: In humans, the folding of neuro-ectoderm gives rise to one of the most important structure i.e…

Q: Describe each stage of the development from fertilized egg to blastocyst stage

A: Fertilization is an important part of sexual reproduction. The nucleus of the male gamete or the…

Q: Identify the three (3) differences between the frog and mammalian testis, and three (3) differences…

A: Triadobatrachus is the earliest known "proto-frog" from Madagascar's Early Triassic, although…

Q: State the differences of the frog and human embryology.

A: Embryology is the branch of science that deals with the embryo and the embryonic development. Frogs…

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: Events that occur from fertilization to the development of an embryo in animals

A: Answer: Introduction: Embryonic development in animals is also known as embryogenesis, is the growth…