Restriction enzymes are used to:
a. amplify a region of dna
c. splice a region of dna into a vector
b. cut double-stranded dna
d. hybridize dna with rna

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.