Evolution and genetics

Evolution.

The process by which different kinds of living organisms develop and change over generations through natural selection and genetic variation.

Species.

A group of organisms that can interbreed and produce fertile offspring, sharing common characteristics and genetic heritage.

Adaptation.

The process by which a species becomes better suited to its environment through physiological or behavioral changes that enhance survival and reproduction.

What do scientist’s use as evidence of eveloution?

Scientists use fossil records, anatomical similarities, genetic analysis, and observable evolutionary changes in populations as evidence of evolution.

Where did Darwin make most of his observations of organisms whil on the H.M.S Beagle?

The Galápagos Islands

What is natural selection?

Natural selection is the process by which individuals with favorable traits are more likely to survive and reproduce, leading to the gradual evolution of species over time.

What happens when a species can’t adapt to changes in the environment?

The species may face extinction as it fails to survive and reproduce in altered conditions.

Why is genetic variation beneficial to a species?

Genetic variation increases a species' ability to adapt to changing environments, enhances survival rates, and provides a broader range of traits for natural selection to act upon.

Why causes genetic variation to a species?

Genetic variation is caused by mutations, gene flow, and sexual reproduction, which introduce new alleles and combinations into a population, enhancing adaptability.

What does it mean about a species what a branch ends?

It indicates that the species has become extinct or that its lineage has diverged into new species.

How is a caldo gram is proof of evolution?

A cladogram illustrates the evolutionary relationships between species, showing common ancestors and distinguishing characteristics that provide evidence for the theory of evolution.