7. activities of dna polymerases you are characterizing a new dna polymerase. when the enzyme is incubated with 32p-labeled dna and no dntps, you observe the release of [32p]dnmps. this release is prevented by adding unlabeled dntps. explain the reactions that most likely underlie these observations. what would you expect to observe if you added pyrophosphate instead of dntps?

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.