The tree of life is made up of which domains?

Gregor mendel was the first scientist to use statistics to analyze scientific data before mandel's experiments, scientists believed that organisms acquired traits from their environment and pass them on to their offspring after mendel's discoveries were accepted scientists realized that traits passed to offspring were the result of genes being passed from parent to his parents this is an example of

According to the cladogram, which organisms have roundworms as a common ancestor?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.