Which is a correct statement about the cell cycle? Nothing happens during the G1 and G2 phases.

DNA replicates during the S phase of interphase.
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The M phase is usually the longest phase.
DNA replicates during cytokinesis of the M phase.

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

Why are adults bigger than they were as children biology

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.