If you performed PCR to amplify a gene region, and you began with 20 copies of double stranded genome, after 18 cycles, about how many double stranded copies of that region would you have (in theory)?

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment