The codons that signal the end of the polypeptide chain are called

A. promoters

B. introns

C. exons

D. Terminators

Biology students used raw eggs in an experiment on tonicity and osmosis. The students put their eggs into vinegar to remove the shells. The vinegar was used to remove the shell form the raw egg.

A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels.

Imagine that a layer of leaves is scattered along a forest floor; what must happen in order to preserve these leaves as fossils?

Which is a leading theory for the formation of fossil fuels? ONitrogen fixated, forming hydrocarbons. B. Earth's magnetic field shifted, resulting in hydrocarbons. C. Dead animals and plants were compressed for many years. D.

Specification has definitely occurred when two groups of related organisms

The chief executive officer asks the nurse manager of the telemetry unit to justify the disproportionately high number of registered nurses on the telemetry unit.

What assures that the two members of a homologous chromosome pair normally go to different daughter cells?

Hi what does mean stereotype in ur opinion?

In cross-pollination, pollen grains must get from one flower to another. What are some ways that this might happen?

If I have green, blue, and purple veins what undertone do I have? My father was dark and my mom is light, I am tan.