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Regina's Biology Blog

By Regina Bailey, About.com Guide to Biology since 1997

Brain Quiz

Friday June 30, 2006
The brain is one of the largest and most important organs of the human body. This organ has a wide range of responsibilities. From coordinating our movement to managing our ... Read More

Brain Anatomy: Occipital Lobes

Wednesday June 28, 2006
The occipital lobes are the regions of the cerebral cortex that are responsible for vision. They are located in the caudal or back area of the brain. Injuries to this ... Read More

Mitosis Study Guide

Friday June 23, 2006
Mitosis is a process of cell division in which the genetic material from a parent cell is divided equally between two cells. Cell division enables organisms to grow and reproduce. Dividing ... Read More

Animal Webcams

Friday June 23, 2006
Have you ever wanted to know what ants really do inside an ant mound? Have you ever wanted to observe wild birds nesting and feeding? Animal Webcams give you a unique ... Read More

Asexual Reproduction

Wednesday June 21, 2006
In asexual reproduction, one individual produces offspring that are genetically identical to itself. These offspring are clones that are produced by mitosis. There are many invertebrates that produce by asexual reproduction. ... Read More

Bioweapons

Saturday June 17, 2006
Biological weapons are toxic materials produced from pathogenic organisms (usually microbes) or artificially manufactured toxic substances that are used to intentionally interfere with the biological processes of a host. There ... Read More

How Vampire Bats Identify Prey

Saturday June 17, 2006
Did you know that vampire bats rely solely on the blood of other animals for their nutrition? That being said, it is important for vampire bats to be able to identify ... Read More

Genetics Glossary: Heterogametic

Wednesday June 14, 2006
Heterogametic individuals are capable of producing gametes that contain one of two types of chromosomes. For example, males produce two types of gametes, one with an X chromosome and another with ... Read More

Bacterial Immune System

Saturday June 10, 2006
Researchers have discovered that bacteria have a protein called H-NS, which allows them to recognize and deactivate DNA from other organisms. Harmless bacteria are able to acquire DNA from other disease-causing ... Read More

Land Biomes: Chaparrals

Friday June 9, 2006
Chaparrals are dry areas typically found in coastline regions. The landscape is predominated by dense evergreen shrubs and grasses. The hot, dry conditions create a favorable environment for fires, which occur ... Read More

Fig Trees and Archaeology

Wednesday June 7, 2006
In an article published in the magazine Science, researchers report that the fig tree may be one of the world's first domesticated plants. The study indicates that these plants were domesticated ... Read More

Cardiovascular System Quiz

Saturday June 3, 2006
The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. This system includes the heart, blood vessels, and blood. Take this quiz to test your knowledge ... Read More

Bacterial Sensing

Saturday June 3, 2006
Researchers from Cornell University have determined how bacteria sense changes in their environment. The study, published in the May issue of Nature Structural and Molecular Biology, shows that receptors on ... Read More

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