Using sea star embryos as an example, describe gastrulation. Explain how the mass of inert yolk affects gastrulation in frog and bird embryos

Q: The location of a cell during gastrulation plays a role in determining the cells fate in the…

A: The process of embryonic development during which the embryo having a single layer of cells called…

Q: In a developing chicken embryo, what mesoderm lines the amniotic cavity?

A: The amnion, chorion, yolk sac, and allantois are the four extraembryonic membranes found in amniotes…

Q: Which process occurs between the zygote and the embryo stage

A: Fertilization is the process of fusion of the male gamete and the female gamete, resulting in…

Q: The beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b.…

A: Gastrulation process is characterized by formation of three primary germ layers, they are ectoderm,…

Q: Write in detail the process of organogenesis in vertebrates. Give one example and make diagram also.

A: In embryology, Organogenesis can be described as a series of processes that lead to converting the…

Q: Investigate how the mass of the inert yolk affects reptiles, mammals and amphibians gastrulation

A: The development of multi-cell organic entities starts from a single celled zygote, which goes…

Q: Aquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without…

A: Animals show two types of fertilization that includes external fertilization and internal…

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: Which type of cleavage leads to the development of a bird?

A:

Q: Distinguish between modes of mesoderm formation

A:

Q: Match the germ layer with the correct derivative Gastrodermis v [ Choose ] Ectoderm Endoderm…

A: There are 3 germ layers ectoderm, mesoderm and endoderm giving rise to different organs in…

Q: Compare the structures of the egg and sperm. What structural modifications do sperm have that…

A: The process of producing new organisms from the pre-existing ones is called reproduction. It may be…

Q: Eventually the amniotic cavity is surrounded by a double-layered membrane called the…

A: The amniotic cavity is the cavity which is the closed sac between the embryo and the amnion and…

Q: Explain the development of human embryo with diagrams.

A: to understand the progess of embryo development in humans, let's use the follwoing flowchart 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: Explain the way in which the egg gets prepared for fertilization during oogenesis.

A: The process through which the male and female gametes combine to create the zygote is known as…

Q: pig fetus  Describe how the developing fetus exchanges material during pregnancy.

A: The placenta is a membrane, which surrounds the developing fetus during pregnancy. It provides…

Q: Describe internal fertilization process in sea urchin.

A: The process of internal fertilization occurs when a male and female gamete fuse inside the female…

Q: Explain how egg rotation and gravity determine anterior posterior patterning in chick embryos

A: Anterior posterior pattern formation is the regionalization process in which specific areas of cell…

Q: Show a model of female reproductive system of turtle showing structures and pathways during…

A: An early scientist who made useful noteson the status of the sea turtle reproductivetract was J. R.…

Q: Give technical name of female used to bring up in vitro fertilized egg to maturity.

A: Pregnancy is also termed as gestation during which one or more offspring develop in the uterus of a…

Q: oviposition for

A: Oviposition is the process of expelling eggs from the oviduct to the external environment.

Q: Newborns are at much higher risk for dehydration thanadults. Why?

A: A baby which is 2 months old from his or her birth is considered newborns.

Q: Compare and contrast gametogenesis in starfish and sea urchin.

A: Answer--

Q: ''Because of the many later developmental trans-formations that produce the elaborately structured…

A: The germ layers develop early in embryonic life, through the process of gastrulation. Triploblastic…

Q: Describe how the embryo changed from earliest stage to the latest stage of each animal.

A: Embryonic development is studied to visualize similarity among different organisms' developmental…

Q: Illustrate an egg in early cleavage, distinguish this stage from thise that follow (2,4,8 cell…

A: In developmental biology, several stages are there which determines the development of the fetus…

Q: During the evolution of animals , bilateral summetry accompanied cephalization . suggest a reason…

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: Assess the function of the uterine horns of the pig.

A: Anatomy can be defined as a branch of biology that is associated with the study of the organism’s…

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: igment in bottom layer? A. melatonin B. melanin C. mesoderm D. ectoderm

A: Biological pigments are chemical substances that produce color in living organisms, like plant…

Q: Elaborate on the oviposition process of female turtles. Provide the pathways included in the…

A: INTRODUCTION Any reptile having a bony shell, including tortoises, is classified as a turtle in…

Q: Diagram spermatogenesis in mammals. Begin with a spermatogonium possessing six chromosomes;…

A: Chromosome is a compact structure of a DNA molecule wrapped around some proteins. It is generally…

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: Regarding mammals, amphibians, and reptiles, explain thoroughly in what way does the inert yolk's…

A: Evolutionary developmental biology is considered a new norm in evolutionary biology. It arose from…

Q: From what the amnion of mammalian embryo is derived?

A: Amnion is an extraembryonic membrane also known as fetal membrane along with chorion, allantois, and…

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: The process by which the structure labeled B is released from the structure labeled A is known as?…

A: The picture is showing the female reproductive system. It consists of ovary(A), Fallopian tube (C),…

Q: Explain the way in which the yolk amount affects the cleavage. Compare the Cleavage in a sea star…

A: Yolk  Yolk is a nutrient rich part of the egg which support the growth of developing embryo.

Q: How does amount of yolk affect cleavage? Compare cleavage in a sea star with that in a bird

A: Fertilization is the process of fusion between haploid male and female gametes to form diploid…

Q: In a female fetal pig, what is the urogenital sinus?  Next, explain what changes take place with…

A: Answer: Introduction: Pigs are mammals. So, all the main structures originate in humans are existing…

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

A: The individual entity that embodies the attributes of life is known as an organism. There are two…

Q: Describe the step-by-step fertilization process in an amphibian.

A: Fertilization is the combination of haploid gametes, egg and sperm, to frame the diploid zygote.…

Q: Where does the embryo get oxygen and release carbon dioxide? Hint: Where do vascular systems come…

A: From the given question, the given embryo is assumed to be bird’s embryo.The early stage of the…

Q: Diagram of: The path traveled by sperm and egg in both humans and sharks

A: The answer is given below

Q: Compare the processes of oogenesis andspermatogenesis in humans

A: A cell that contains half the number of chromosomes of a somatic cell and able to unite with one…

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: Expound how the mass of inert yolk influences gastrulation in amphibians, reptiles and mammals.

A: Answer  All these animals belong to vertebrate and vertebrates, possess much more amount of yolk as…

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,…