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Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
tertiary consumer
Glossaries - Biology glossary

carnivore that eats other carnivores

tertiary structure
Glossaries - Biology glossary

three-dimensional conformation of a protein, including interactions between secondary structural elements; formed from interactions between amino acid side chains.

test
Glossaries - Biology glossary

porous shell of a foram that is built from various organic materials and typically hardened with calcium carbonate

test cross
Glossaries - Biology glossary

cross between a dominant expressing individual with an unknown genotype and a homozygous recessive individual; the offspring phenotypes indicate whether the unknown parent is heterozygous or homozygous for the dominant trait

testa
Glossaries - Biology glossary

outer layer of the seed coat

testes
Glossaries - Biology glossary

pair of reproductive organs in males

testosterone
Glossaries - Biology glossary

reproductive hormone in men that assists in sperm production and promoting secondary sexual characteristics

Testudines
Glossaries - Biology glossary

order of turtles

tetrad
Glossaries - Biology glossary

two duplicated homologous chromosomes (four chromatids) bound together by chiasmata during prophase I

tetrapod
Glossaries - Biology glossary

phylogenetic reference to an organism with a four-footed evolutionary history; includes amphibians, reptiles, birds, and mammals

thalamus
Glossaries - Biology glossary

brain area that relays sensory information to the cortex

thalassemia
Glossaries - Biology glossary

rare genetic disorder that results in mutation of the alpha or beta subunits of hemoglobin, creating smaller red blood cells with less hemoglobin

thallus
Glossaries - Biology glossary

vegetative body of a fungus

thermocline
Glossaries - Biology glossary

layer of water with a temperature that is significantly different from that of the surrounding layers

thermodynamics
Glossaries - Biology glossary

study of energy and energy transfer involving physical matter