Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Question
Chapter 43.3, Problem 1R
Summary Introduction
To review:
The difference between the process of gastrulation in sea urchin and frog.
Introduction:
The zygote after fertilization undergoes multiple cell divisions to give rise to the blastula. The blastula is a ball of cells with a fluid-filled cavity. The conversion of the blastula into the distinct tissue layers and body axes, by the movement of cells, is known as gastrulation.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Why is it necessary for the egg to have changes leading to polyspermy blockduring fertilization?
With regard to early cleavage in the sea urchin, is the entire zygote involved in early cleavage?
What happens to the size of cells as the cell number increases? Do they get bigger or
smaller in these early stages?
How does the size of these cells compare to the size of the original fertilized egg?
How is the process of gastrulation accomplished in mammalian embryos?
Chapter 43 Solutions
Life: The Science of Biology
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- List and describe some developmental anomalies associated with gastrulation.arrow_forwardIf gastrulation did not occur properly and one of the primarygerm layers wasn’t formed, would the embryo be able tosurvive? Why or why not?arrow_forwardDescribe the movement of cells during early development that change an embryo from a blastula to a gastrula. Name the three main germ layers, describe their relative locations, and list the fates of the cells descended from each layer. What is the name and significance of the opening in the gastrula?arrow_forward
- From a 24-hour chick embryo, provide the answers in the following: Pairs of somites in a 24-hour chick embryo Germ layer/s that forms the head process What begins the formation head of process Germ layer/s that form the proamnion Explain why the notochord is not visible in areas where the somites are seenarrow_forwardClassify and diagram embryos on the basis of their: (a) yolk content, (b) cleavage types, (3) cleavage patterns. Give examples for each. Egg Types and Cleavage Yolk Content Types of Cleavage Pattern of Cleavage Model Organism(s) Oligolecithal/ isolecithal Mesolecithalarrow_forwardAsexual reproduction does exist with numerous unique adaptations, but it is normally sexual with both male and female sexes. a) Describe the different types of parthenogenesis and give an example of each type of insect. b) List and briefly describe four important elements that affect a female's ability to generate eggs and the amount of eggs that are oviposited.arrow_forward
- Explain how the flat embryonic disc takes on the cylindrical shape of a tadpole.arrow_forwardWhy is the ovum so much bigger than a sperm cell? 1)It already contains all the chromosomes that will determine the zygote's traits. 2)It must store enough food for the growth of the zygote into an embryo. 3)Its big size allows the sperm to locate it better inside the oviduct. 4)A big ega is easier to implant in the uterus after tertilization.arrow_forwardWhat events occur during the first week after fertilization?Use the terms zygote, morula, blastocyst, blastocele,totipotent, and pluripotent in your explanation.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY