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Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
heterogeneity
Glossaries - Biology glossary

number of ecological niches

heterospecifics
Glossaries - Biology glossary

individuals that are members of different species

heterosporous
Glossaries - Biology glossary

produces two types of spores

heterothallic
Glossaries - Biology glossary

describes when only one mating type is present in an individual mycelium

heterotroph
Glossaries - Biology glossary

organism that consumes organic substances or other organisms for food

heterozygous
Glossaries - Biology glossary

having two different alleles for a given gene on the homologous chromosome

hibernation
Glossaries - Biology glossary

torpor over a long period of time, such as a winter

hilum
Glossaries - Biology glossary

region in the renal pelvis where blood vessels, nerves, and ureters bunch before entering or exiting the kidney

hinge joint
Glossaries - Biology glossary

slightly rounded end of one bone fits into the slightly hollow end of the other bone

hippocampus
Glossaries - Biology glossary

brain structure in the temporal lobe involved in processing memories

histone acetylation
Glossaries - Biology glossary

epigenetic modification that leads to gene silencing; a process involving adding or removing an acetyl functional group

holistic ecosystem model
Glossaries - Biology glossary

study that attempts to quantify the composition, interactions, and dynamics of entire ecosystems; often limited by economic and logistical difficulties, depending on the ecosystem

holoblastic
Glossaries - Biology glossary

vcomplete cleavage; takes place in cells with a small amount of yolk

holoenzyme
Glossaries - Biology glossary

prokaryotic RNA polymerase consisting of α, α, β, β', and σ; this complex is responsible for transcription initiation

homeostasis
Glossaries - Biology glossary

ability of an organism to maintain constant internal conditions