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Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
poly-A tail
Glossaries - Biology glossary

modification added to the 3' end of pre-mRNAs to protect mRNA from degradation and assist mRNA export from the nucleus

polyandry
Glossaries - Biology glossary

mating system where one female mates with many males

polycarpic
Glossaries - Biology glossary

plants that flower several times in their lifetime

polygenic
Glossaries - Biology glossary

phenotypic characteristic caused by two or more genes

polygyny
Glossaries - Biology glossary

mating system where one male mates with many females

polymer
Glossaries - Biology glossary

chain of monomer residues that is linked by covalent bonds; polymerization is the process of polymer formation from monomers by condensation.

polymerase chain reaction (PCR)
Glossaries - Biology glossary

technique to amplify DNA

polymorphic
Glossaries - Biology glossary

possessing multiple body plans within the lifecycle of a group of organisms

polynucleotide
Glossaries - Biology glossary

long chain of nucleotides.

polyp
Glossaries - Biology glossary

stalk-like sessile life form of a cnidarians with mouth and tentacles facing upward, usually sessile but may be able to glide along surface

polypeptide
Glossaries - Biology glossary

long chain of amino acids linked by peptide bonds.

polyploid
Glossaries - Biology glossary

individual with an incorrect number of chromosome sets

polysaccharide
Glossaries - Biology glossary

long chain of monosaccharides; may be branched or unbranched.

polysome
Glossaries - Biology glossary

mRNA molecule simultaneously being translated by many ribosomes all going in the same direction

polyspermy
Glossaries - Biology glossary

condition in which one egg is fertilized by multiple sperm