Farmers across the country depend on bees and other insects to fertilize their crops. Most of the crops we eat are the seed-bearing parts of the plants including wheat, corn, and all fruits. Without fertilization, these edible parts of the plants would not develop. Form a hypothesis as to what would happen to the crops if global warming increases the temperature during the time of year when bees are developing.

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.