This subject covers the key concepts and topics tested in the GRE Subject Test for Biology, including cellular biology, genetics, and ecology.
Evolution is the process by which species change and adapt across generations. Population dynamics focus on how and why populations grow, shrink, or change.
Populations can grow exponentially under ideal conditions, but limiting factors (like food and space) lead to logistic growth.
\[ \frac{dN}{dt} = rN \left(1 - \frac{N}{K}\right) \]
Where \(N\) is population size, \(r\) is growth rate, and \(K\) is carrying capacity.
Understanding these concepts helps us conserve endangered species and manage natural resources more effectively.
\[\frac{dN}{dt} = rN \left(1 - \frac{N}{K}\right)\]
Bacteria evolving antibiotic resistance in hospitals.
Conservationists reintroducing wolves to restore ecosystems.
Population dynamics and evolution explain how species adapt, survive, or go extinct over time.