Question

What is the best definition for biological evolution?

Answer 1

Hint: In its broadest sense, evolution explains why what we see today differs from what existed previously. Galaxies, stars, the solar system, and the Earth have all evolved over time, as has life on the planet. The definition of an adaptation is a change or adjustment to improve something, or to make it suitable to a different situation.

Complete answer:
A gradual process in which something changes into a different and usually more complex or better form. Changes in a population's genetic composition through generations, often culminating in the emergence of new species.
Natural selection acting on genetic variation among individuals, mutation, migration, and genetic drift are examples of evolution mechanisms. Biological evolution is the study of changes in living things over the course of Earth's history. It illustrates how all living things have ancestors in common.

Natural selection and other biological processes give rise to new species over time. This process was dubbed "descent with modification" by Darwin, which is still a suitable characterization of biological evolution today." Over repeated generations, evolution is defined as a change in the heritable traits of biological populations.

These traits are the manifestations of genes that are passed down from one generation to the next during reproduction. As a result of mutation, genetic recombination, and other causes of genetic variety, different features tend to exist within any given population. Natural selection (including sexual selection) and genetic drift act on this variation, causing certain characteristics to become more common or rare within a population.

It is this process of evolution that has given rise to biodiversity at every level of biological organisation, including species, individual organisms, and molecular levels.

Note:-
Evolution is merely the statistical result of different individuals with varying skills contending for the same limited resources required for existence and passing their characteristics on to the next generation with varying degrees of success. Or, to put it another way, evolution is a statistical method for modifying the frequency of certain features within a population based on their comparative success.