Do prokaryotes have membrane bound organelles

Diagram what would happen if sexual reproduction took place for four generations using diploid (2n) cells.

Suppose that a mutation occurs in the middle of a large intron of a gene-encoding a protein. what will the most likely effect of the mutation be on the amino acid sequence of that protein?

Which of the following is a significant cause of physical weathering? A. moving water B. frozen water C. wind D. all of these

Low blood glucose stimulates which organ (s) to release glucagon into the bloodstream? a. Gallbladder b. Liver c. Pancreas d. Spleen e. Kidneys

From which source is it thought that chloroplasts in algae originated

Which group of elements shares characteristics with both metals and nonmetals?

Where and how does ammonification / nitrification take place

Jill has a beaker. In this beaker there are two layers. The top layer is transparent with a yellow tint to it, and the bottom layer is transparent and clear. Jill decides that the bottom layer is probably water.

Starfish are capable of growing a new starfish from a single arm if it is bitten off by a fish or pulled off by force. This type of asexual reproduction is called

Genetic drift and natural selection only take place if there is