Scientists often use bacteria when making recombinant dna since the bacteria can produce the desired protein quickly and in large quantities. they will often insert the foreign gene into a small circular piece of bacterial dna, which is separate from the main chromosome. what is this piece of dna called?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

What is the most common structure of volcanoes?

What are the three different shapes, or structures, of carbon-based molecules