Examlex
A chronic neurologic disease that involves an imbalance in the levels of the neurotransmitters dopamine and acetylcholine is called ________ disease.
Viable Gametes
Reproductive cells (sperm and eggs) that are capable of fertilization and supporting normal development.
Hybrid Inviability
A postzygotic barrier where hybrid offspring fail to survive to reproductive maturity.
Species Incompatibility
A biological impediment that prevents different species from interbreeding or producing fertile offspring due to genetic, behavioral, or physiological barriers.
Gametic Isolation
A mechanism of reproductive isolation where the gametes (egg and sperm) of different species are unable to fuse or recognize each other, preventing fertilization.
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