Biology 12 Glossary      Page  R  

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Radial and bilateral symmetry

Radicle

Radioactive dating

Radula

Reabsorbtion

Receptor

Recessive

Recombinant DNA

Red blood cell

Reflex

Reflex arc

Reforestation

Rejection

Relative dating

Replication

Repressor

Reproductive isolation

Reproductive system

Respiration

Respiratory system

Resting potential

Restriction enzyme

Retrovirus

Rheumatic fever

Rheumatoid arthritis

Rhizoid

Rhizome

Root cap

Roundworm

Rumen

S

F