Which one of the following statements best describes the first thing researchers need to do to manipulate dna? a. gel electrophoresis would be used to separate fragments of dna. b. restriction enzymes would be used to cut the dna into smaller pieces. c. researchers would need to separate synthesized strands by size on a gel. d. single-stranded dna fragments would be placed with dna polymerase in a test tube.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.