Human anatomy is a popular subject for many biology students. Human anatomy deals with body components and body structure. The human body is organized on various levels. Each of these ... Read More

Researchers have successfully changed one bacterial species into another. They accomplished this task by replacing one bacteria's genome with another bacteria's genome. The bacteria involved in the study are Mycoplasma capricolum ... Read More

Microsporocytes in Metaphase I © John C. Glase Meiosis is a two-part cell division process in organisms that sexually reproduce. In metaphase I of meiosis, tetrads align at ... Read More

Image courtesy of MedValet Valves are flap-like structures that allow blood to flow in one direction. The heart has two kinds of valves, atrioventricular and semilunar valves. The atrioventricular ... Read More

All animals must eat to survive. With predators always on the lookout for a meal, prey must constantly avoid being eaten. The predator-prey relationship is important in maintaining balance among ... Read More

Staphylococcus aureus Photo: CDC/Janice Carr Researchers have determined how the bacterium Staphylococcus aureus can hide inside lung cells to avoid the body's immune defense mechanisms, as well as ... Read More

Have you ever wondered why you have the same eye color as your mother or the same hair color as your father? Genetics is the study of heredity or inheritance. ... Read More

The parietal lobes are one of the four main lobes or regions of the cerebral cortex. The parietal lobes are located superiorly to the occipital lobes and posteriorly to the central ... Read More

Taxonomy is a hierarchical system for classifying and identifying organisms. This system was developed by Swedish scientist Carolus Linnaeus in the 18th century. Linnaeus's taxonomy system has two main features that ... Read More

Microsporocytes in Prophase I © John C. Glase Meiosis is a two-part cell division process in organisms that sexually reproduce. In prophase I of meiosis, chromosomes condense and ... Read More

Muscle tissue is made of excitable cells that are capable of contraction. This tissue is the most abundant tissue in most animals. Muscle tissue has numerous microfilaments composed of ... Read More

Researchers believe they have discovered the key to stopping a serious heart condition known as cardiac hypertrophy. Cardiac hypertrophy is an enlargement of the heart due to increased stress on the ... Read More

The cerebrum is the most highly developed part of the human brain and is responsible for thinking, perceiving, and understanding language. It is also involved with controlling motor and sensory functions. The ... Read More

The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles, now called Mendel's law of independent assortment, states that allele ... Read More