Why is the immune response faster after vaccination than the

response that occurs the first time a pathogen invades?

A misconception about dominant alleles is that they are more common in the population. explain why dominant alleles can be quite rare.

According to the endosymbiosis theory of the origin of eukaryotic cells, how did mitochondria originate?

These are physical features shared by organisms with common ancestry; they may have the same structure What are these shared physical features?

The carrying capacity in an ecosystem is most likely to change after a major

Larry moved from Chicago to Atlanta. For the first two years he lived there he had no allergies in the spring. Then, in the third year, he had very bad allergic reactions to spring pollens.

Dna stands for what in biology

Coal is used to produce energy. The harmful gases produced by coal are cleaned up by a method which needs a large amount of limestone. Predict and explain the long term effect on the environment of obtaining and using limestone.

True or false two genes may not segregate independently if they are on the same chromosmoe

Blood pressure rises and falls in a pattern corresponding to the phases of the

Immune system cells enter a resting phase after undergoing mitosis. when activated-for example, by an infection-they can reenter the sequence of events in the cell cycle that leads to cell division.