Explains with the help of a flowchart the steps in creating a DNA fingerprint and a few techniques that have been developed to improve accuracy and efficiency.

Discusses the scientists who made discoveries about DNA and those who invented and worked on DNA fingerprinting, and some of the criminal cases that were resolved or thrown out through the use of DNA evidence. (Warning: Some of these...

The Casparian strip is found in the endodermis layer of a plant's roots and it assists the plant in absorbing water and nutrients from the soil. The structure of a plant root is described and the process by which the Casparian strip...

Presents biographical information about prominent geneticists and describes the discoveries they are famous for.

Discusses common mutations that occur in the human population and describes the many different types of genetic mutations and their impact.

Chitin is a biopolymer that gives rigidity to exoskeletons and other protective structures of organisms, thereby preventing injury to soft internal tissues and other parts. Its chemical structure is shown and its functions are described.

An explanation of the concept of emergence and what it means in biology. Emergence is a property of a system or structure that is present in the whole but not in its individual components. Presents examples of emergence at different...

Describes the main phyla in the kingdom Animalia.

The parts of a eukaryotic cell are presented with short descriptions of the structure and function of each of its organelles.

Explains what homologous structures are and how they indicate common ancestry between species. Discusses morphological homology, which refers to anatomical and skeletal similarities, and molecular homology, which refers to common...

The amoeba is a unicellular protozoan organism that has existed since prehistoric times. Its physical characteristics, life cycle, and metabolic activities are described in this resource.

The differences between mitosis and meiosis are explained in this resource. Includes labeled diagrams showing what happens during each and a chart giving an overview of their differences.

Explains what genetic diversity is, things that cause it, factors that affect it negatively, and why it is so important. Includes examples of the presence and absence of genetic diversity.

Describes the stages of aerobic cellular respiration and the chemical reactions taking place in each.

Describes the cytosol, organelles, and cytoplasmic inclusions found in the cytoplasm of a cell, and the functions of the cytoplasm itself.

The parts of an animal cell are presented with descriptions of each of its organelles.

The structure and functions of chloroplasts are described in detail here.

Provides descriptions of many different branches in the field of biology.

Detailed descriptions of what DNA replication looks like in eukaryotic and prokaryotic cells and how they are similar and different.

The phases of mitosis are described and the splitting of a cell into two daughter cells at the end of it.

Explains what lipids are, what role they play in the human body, and the characteristics of the different types.

The characteristics of the rough endoplasmic reticulum are described and its role in protein synthesis, including creating proteins, folding them, transporting them, and checking them for quality.

Explains that analogous structures are ones that are similar in different organisms yet have no common ancestry. This type of phenomenon occurs with convergent evolution. Includes lots of examples for both animals and plants.

Provides short descriptions of the characteristics of each of the seven continents, along with maps.