Natural selection acts upon

A only recessive alleles

B alleles that are expressed

C only alleles that are the result of recent mutations

D only dominant alleles

Where do you find organelles

17. What area of Earth science is likely to involve the study of climate? a. geology b. biology C. astrology d. meteorology

What kind of gut do worms in Phylum Platyhelminthes have?

Atherosclerosis is characterized by the buildup of arterial plaque. When plaque first begins to form, on which part of the blood vessel do the monocytes bind after taking in cholesterol-rich lipoproteins?

Almost every type of cell contains this central, spherical body

What is thought to be most responsible for the salinity of the oceans

What is one function of the smooth endoplasmic reticulum

Are people Producers, Decomposers, or Consumers?

How much of the Amazon has been discovered?

Lets have a discussion: recombinant dna on a human. what are your thoughts? unethical, or a possible breakthrough?