When the environment pushes an individual or population to adapt or evolve

When the environment pushes an individual or population to adapt or evolve

• A. Mutation
• B. Gene flow
• C. Selective pressure
• D. Genetic drift

Answer: (C)

Selective pressure is the environmental force that determines which traits help individuals survive and reproduce. When conditions in the environment favor certain phenotypes, individuals with those traits are more likely to survive and leave offspring, leading to evolution over generations. This is exactly what is meant by the environment pushing adaptation or evolution. For instance, drought conditions favor plants that conserve water or have deeper roots, so these traits become more common over time. The other mechanisms operate differently: mutation introduces new variation, gene flow moves alleles between populations, and genetic drift causes random changes in allele frequencies unrelated to current environmental needs.

Selective pressure is the environmental force that determines which traits help individuals survive and reproduce. When conditions in the environment favor certain phenotypes, individuals with those traits are more likely to survive and leave offspring, leading to evolution over generations. This is exactly what is meant by the environment pushing adaptation or evolution. For instance, drought conditions favor plants that conserve water or have deeper roots, so these traits become more common over time. The other mechanisms operate differently: mutation introduces new variation, gene flow moves alleles between populations, and genetic drift causes random changes in allele frequencies unrelated to current environmental needs.