An allele is any form of a gene that can occupy the same locus. The correct spelling is "allele."

There are numerous branches of biology, which is the general study of life. Botany is the branch which is concerned with the study of plants.

The correct spelling of the term is "medulla oblongata." This is the lower or hindmost part of the brain.

The correct way to spell this word is "gonad." A gonad is a gland in an animal in which gametes are produced. Gametes are sex cells.

"Thorax" is the completed word. A thorax is the body of an arthropod between the head and abdomen. Insects and crabs are examples of arthropods.

"Symbiosis" is the correct spelling of this term. It describes two different separate organisms mutually interacting for both of their benefit.

Have you ever wondered why plants are green? This is due to the fact that photosynthetic organisms contain chlorophyll.

"Pollen" is the correct spelling of this word. Pollen is the fine spores containing male gametes. They are a part of how flowering plants reproduce.

Oak trees are an example of deciduous plants. This means that they shed their foliage yearly, at the end of the growing season.

"Epidermis" is the correct spelling of this word. It refers to the outermost layer of skin that covers the surface of the body of an animal.

An exoskeleton is the exterior hard tissue or shell that many types of organisms have for protection. These include bones, scales, nails or hoofs.

"Hypothesis" is the correct spelling of this word. A hypothesis is a formative insight that needs to be further verified and tested.

The correct spelling of this world is "pollination." Pollination is the transfer of the small spores that contain male plant gametes. This is how plant organisms reproduce.

The correct spelling of this word is "nucleus." The nucleus is an important part of a cell. It is responsible for growth and reproduction.

"Pedigree" is the proper spelling of this word. It is a diagram which shows the relationship between an organism and its ancestors.

Genes are a part of our DNA. They control our physical characteristics and growth.

"Cytoplasm" is the correct spelling of this word. It refers to what is inside a cell, excluding the nucleus.

Matter is the correct spelling of this word. Matter both has mass and occupies space. All things which physically exist are made of matter.

"Membrane" is the correct spelling of this word. It is a sheet or tissue that lines and connects organs and cells.

"Phenotype" is the right spelling of this scientific term. This is the term for an organism's final appearance.

A neurotoxin is any toxin that negatively affects neural tissues. Lead, ethanol and manganese are common neurotoxins.

Parasite is the correct spelling of this biological term. A parasite is an animal or plant organism that lives off a host.

The correct spelling of this term is "pathogen." A pathogen is a disease-producing agent.

The correct spelling of this term is "photosynthesis." It is the process through which plant organisms transform sunlight into energy. They use this energy to survive and grow.

"Loam" is spelled correctly. It is a rich soil made up of sand, clay and organic materials.

A univalve is an animal with one valve or shell. They are also called gastropods. Animals like mollusks and snails are univalves or gastropods.

"Virus" is the correct spelling of this term. A virus is an infectious agent the multiplies within living hosts. They can cause damage and even death to other organisms.

"Species" is the correct spelling of this word. A species is a taxonomic group of organisms. These organisms have similar physical appearances and can naturally interbreed.

Paleontology is a branch of biology. It is an earth and life science which focuses largely on fossil organisms. These include humans, animals and ancient organisms.

"Mutation" is the correct spelling of this word. A mutation is a change in the form or quality of an organism. This can be both for better or worse.

"Mitosis" is the correct spelling of this term. Mitosis is the process during which a cell divides into a pair of smaller cells.

"Genetics" is the correct spelling of this term. Genetics is the study or heredity and variation in all kinds of living organisms.

"Element" is the correct spelling of this word. An element can not be broken down into a smaller substance through chemical means.

"Biome" is the correct spelling of this word. A biome is a large ecological community. It will have its own distinct climate characteristics and plant life.

An antiobiotic is a substance used to kill microorganisms. They are used to cure infections in animals.