In a dna molecule the ratio of adenine (a) molecule to thymine (t) is 1: 1. if in a strand of dna there are 1 million a molecules, how many t molecules are expected in the same strand?

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

What characteristic makes a cell membrane selectively permeable