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Study of animals
Female reproductive cell in a plant or animal
Process of crossbreeding plants or animals of different varieties or species
Human genetic defect that results in an inability to metabolize the amino acid phenylalanine and can result in brain damage
Structure at the tip of a sperm cell that helps the sperm penetrate the egg
Study of microorganisms
Division that forms two new identical cells during cell reproduction
Microscopic unicellular organism that lives in fresh and salt water
Process by which a species, organism, or organ develops from its original state to a new state over a long period
Bacteria-destroying virus
Smallest unit into which a living thing can be divided and be able to function by itself
A membrane-enclosed organelle found in eukaryotic cells, containing most of the cell's genetic material
Thick protoplasm that in a living cell is always moving and fills the space between the cell membrane and the nucleus
Prevails in the offspring only if both parents contribute it
Person or animal with both male and female sexual organs or a plant having stamens and pistils in the same flower
Mammals having hoofs, such as horses and pigs, using the tips of their toes, to sustain their whole body weight while moving
Theory that life can spring from nonliving matter
Organic molecules that allow organisms to transfer genetic information from one generation to the next
A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote
Extremely small disease-causing organism whose name means 'poison'
Animals such as man or bear that walk on the entire sole of the foot
Threadlike body found in the nucleus of a cell
Small, rounded structures that produce disease-fighting white blood cells or lymphocytes and filter out harmful microorganisms and toxins
Animals such as cats, dogs, or horses that walk only on their toes without the heels touching the ground
Branch of knowledge dealing with living organisms and life processes of plants and animals
