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Chromosomes
Proteinous, string-like entities situated in the cell nucleus of animals and plants, containing a single DNA molecule.
Phylogenetic Species
Refers to a group of organisms that are classified together based on a common ancestor, emphasizing genetic lineage.
Biological Species Concept
A definition of species that refers to groups of interbreeding natural populations that are reproductively isolated from other such groups.
Reinforcement
In psychology, a stimulus that strengthens or increases the probability of a specific response.
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