Having no dimples is a recessive trait in humans that is controlled by a single gene. How many recessive alleles must a person have to have no dimples?

Which of the following determines the atomic number of an element? A. The number of protons plus neutrons B. The number of protons in the atom's nucleus C. The outer shell of electrons in the atom

Animals such as bears that consume both plants and other animals are referred to as

True or false indoor air pollution cannot be prevented

What sorts of living things are made up of prokaryotic cells? Give two examples.

Did dinosaurs exist at the same time as humans?

The United States uses which source of energy to produce almost 40 percent of its electricity? A. solar B. water C. biomass D. wind E. coal

Which cell breaks down carbohydrates

What characteristic distinguishes the five groups of fungi?

A research colleague has provided you with a single cell to identify. briefly describe the steps you would take to determine which domain this cell would most likely belong to.

A new organism is discovered in the forests of Costa Rica. Scientists there determine that the polypeptide sequence of hemoglobin from the new organism has 72 amino acid differences from humans, 65 differences from a gibbon, 49 differences from a