Biology for IGCSE & O level - Variation And Selection (Section 6 - No. 7)
How does the environment influence variation within a population?
By directly altering the genes of the organisms.
By selecting for certain genetic traits that are better suited to the environment.
By causing mutations in the DNA of the organisms.
By influencing the phenotype (observable characteristics) of organisms.
설명
The environment influences the phenotype (observable characteristics) without necessarily changing the underlying genes, though can have indirect affects via natural selection.