Printer Friendly

Normal embryogenesis in Arbacia.

Arbacia, sea urchins, are used by biologists to study embryonic development. The purpose of this experiment was to observe normal embryonic development of the sea urchin, Arbacia. Before the actual fertilization and zygote formation of the sea urchin five steps are performed. The sperm moves toward the egg by chemotaxis, which is movement by the sperm cell in reaction to chemical signals, sent out by the egg cell. The second, third and fourth steps of this process, respectively, are the acrosomal reaction, the sperm cell and egg cell adhesion through the vitelline envelope, and the actual membrane contact between the two cells. The gamete fusion is the last step of this process. The fusion allows the egg to be activated and subsequent embryonic development to occur.
Katie Hopkins, Susan Roy
Department of Biology
Presbyterian College
COPYRIGHT 2002 South Carolina Academy of Science
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2002 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Author:Hopkins, Katie; Roy, Susan
Publication:Bulletin of the South Carolina Academy of Science
Article Type:Brief Article
Geographic Code:1USA
Date:Jan 1, 2002
Previous Article:Utilization of gold nanoparticles for the detection of lithium.
Next Article:Does the exoU gene from Pseudomonas aeruginosa move via a plasmid?

Related Articles
Quinzieme Colloque Scientifique International sur le Cafe, 2 vols.
Gone fishing: scientists use mutant zebra fish to learn how vertebrate embryos develop.
New gene clearly resolves an eye debate.
R & D Agenda for Sustainable U.S. Forest Productivity.
Boehringer Ingelheim obtains United States patent.
Obtaining pluripotent stem cells without destroying human embryos focus of President's Council on Bioethics' report.
Plant embryogenesis.
Experimental endocrinology and reproductive biology.

Terms of use | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters