Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..