Question

match the following concept /word to their definition.
founder of evolutionary theory
darwin
process that drives evolution; matches organism to its environment
natural selection
decent with modification
evolution
individuals can be acted upon by
choose
populations can be acted upon by
choose
traits that evolve in distantly related groups through convergent evolution
analogous structures
remnants of features no longer used by a species
vestigial structures
variations on the structural theme through evolution
homologous structures
movement of alleles into and out of a population that stabilize variation among two populations
gene flow

Explanation:

For "Individuals can be acted upon by -------", the concept related to individual-level selection in evolution is Natural Selection (since natural selection acts on individuals' traits to influence survival/reproduction). For "Populations can be acted upon by -------", processes like Gene Flow (or other population-level evolutionary forces) act on populations. But from the given options and evolutionary concepts:

• "Individuals can be acted upon by" → Natural Selection (as natural selection targets individual phenotypes).
• "Populations can be acted upon by" → Gene Flow (or other population - level mechanisms; but from the context of the given terms, Gene Flow acts on populations by moving alleles between them, or Natural Selection also acts on populations over time, but more precisely, for the "Individuals..." slot, Natural Selection (as it acts on individual traits), and for "Populations...", Gene Flow (or Natural Selection at population level, but the key is matching the concept. Wait, re - evaluating:

In evolution, natural selection acts on individuals (their traits determine survival/reproduction), while processes like gene flow, genetic drift act on populations. So:

• "Individuals can be acted upon by" → Natural Selection (since natural selection operates on individual organisms' phenotypes).
• "Populations can be acted upon by" → Gene Flow (or Genetic Drift, but from the given options, Gene Flow is about allele movement between populations, so it acts on populations). But looking at the dropdowns, the available options (from the previous ones and the context) – let's check the concepts:

Wait, the first missing is "Individuals can be acted upon by" – natural selection acts on individuals (their traits), so the answer for the first [Choose] is Natural Selection? No, wait, the existing matched ones: "Process that drives evolution; matches organism to its environment" is Natural Selection. Wait, maybe I made a mistake. Let's re - sort:
Evolutionary concepts:

• Natural Selection: acts on individuals (their traits) to cause differential survival/reproduction.
• Gene Flow: acts on populations (moves alleles between populations).

So:

1. "Individuals can be acted upon by" → Natural Selection (because natural selection targets individual organisms' characteristics).
2. "Populations can be acted upon by" → Gene Flow (because gene flow involves the movement of alleles into and out of a population, affecting the population's gene pool).

Answer:

• Individuals can be acted upon by: Natural Selection
• Populations can be acted upon by: Gene Flow