Which mechanism affected the gene pool of the immigrants that entered the United States through Ellis Island?

- genetic drift

- gene flow

- gene mutation

- natural selection

The ability of a vertebrate to generate millions of different lymphocytes is a result of its dna undergoing what process?

What two things are involved in a nerve impulse?

Before a skeletal muscle fiber can contract

What is most important about sands

You have identified a plant in your garden with a new flower color. You want to determine if this phenotype is dominant or recessive. Which cross would tell you this?

Most biological molecules are joined by:

7. Which human activity will most likely contribute to ozone layer destruction? cutting down trees to build a library using fertilizer to grow bean crops planting flowers that come from another area frequently using an air conditioner in the home 8.

Compounds are made up of electrons cells molecules protons

What organelle do both prokaryotic and eukaryotic cells have in common? What does it do?

how does drooping the sticks on the table and transcribing the letters on the sides facing up follow mendel's law of segregation