Evolution is:

A) A change in the composition of a population from one generation to the next.
B) A phenomenon that must be inferred from evidence, because it cannot be observed directly.
C) The transformation of an individual to better fit its environment.
D) Driven by the use or disuse of a body part, as when a finch uses its beak to crack open seeds.

a, b, and c are all correct.
take for example finches off of the galapagos islands. they vary from island to island, yet are still the same bird. on one island they have bigger, more durable and stronger beaks, because that island has many nuts to crack open and eat. on another island, they have thin ling beaks, ideal for pecking at insects in the grass on tree bark. evolution is literally survival of the ifttest, where those equipped best will live and those without means to fight for life will die off, leaving those most capable of reproduction and passing down genes.

Answered by alialioxenfree | 2024-06-10

Evolution is the genetic change over time within a population, caused by differential reproduction and is demonstrated by the shifting average beak size in a finch population. An individual's development is not evolution. The theory of evolution does not address the origin of life but explains biodiversity through natural selection.

Evolution is the change in the genetic composition of a population over time, specifically from one generation to the next. This change is a result of differential reproduction of individuals with certain alleles and cannot occur in an individual's lifetime since their genetic material remains constant. Rather, what individuals experience as they grow is development, which is based on the genes they received at birth and their interactions with the environment.
An example to illustrate evolution is the change in beak size of medium-ground finches in the Galápagos due to natural selection. This does not imply that individual finches' beaks change during their lives. Instead, if average beak sizes are measured over several years, researchers will see differences due to new individuals in the population with different traits, not because any single bird's beak changed.
It's also important to note that the theory of evolution does not include the origin of life. Instead, it explains how diversity and changes within and across species develop over generations through mechanisms such as natural selection, as described by Charles Darwin and Alfred Russell Wallace.

Answered by EvaSharma1 | 2024-06-25

Evolution is the change in the genetic composition of a population over generations, driven by natural selection and inferred from scientific evidence. Options A and B accurately represent this concept, while options C and D are misleading. Therefore, the correct answers are A and B.
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Answered by alialioxenfree | 2024-09-26