2. Look at the events in your Sorting Tool activity and at the Geologic Time Scale diagram from the article in what penod did the first fish appear?

Rue or false siblings look simila rbecause they each have some traits of their parents.

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the