S: (n) carrier (carrier%1:05:00::) ((genetics) an organism that possesses a recessive gene whose effect is masked by a dominant allele; the associated trait is not apparent but can be passed on to offspring)
S: (n) diploid (diploid%1:05:00::) ((genetics) an organism or cell having the normal amount of DNA per cell; i.e., two sets of chromosomes or twice the haploid number)
S: (n) heteroploid (heteroploid%1:05:00::) ((genetics) an organism or cell having a chromosome number that is not an even multiple of the haploid chromosome number for that species)
S: (n) plankton (plankton%1:05:00::) (the aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water)
S: (n) nekton (nekton%1:05:00::) (the aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales)
S: (n) parasite (parasite%1:05:00::) (an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host)
S: (n) host (host%1:05:00::) (an animal or plant that nourishes and supports a parasite; it does not benefit and is often harmed by the association)
S: (n) fungus (fungus%1:20:00::) (an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia)
S: (n) relict (relict%1:20:00::) (an organism or species surviving as a remnant of an otherwise extinct flora or fauna in an environment much changed from that in which it originated)
S: (n) agent (agent%1:17:00::) (an active and efficient cause; capable of producing a certain effect) "their research uncovered new disease agents"
S: (n) nature (nature%1:18:00::) (a causal agent creating and controlling things in the universe) "the laws of nature"; "nature has seen to it that men are stronger than women"
S: (n) power (power%1:18:00::), force (force%1:18:00::) (one possessing or exercising power or influence or authority) "the mysterious presence of an evil power"; "may the force be with you"; "the forces of evil"