Notchochord, morphology, chordates
The second question has the answer of A
The enzyme responsible for that is DNA helicase.
Bacteria multiply. I think... bacteria dont have double helix dna. They have what is called a plasmid. If I remember correctly, its most often bacteria that have plasmids for dna and so they duplicate by binary fission instead of the way we do.
Answer:
The correct answer is option A) "The plasmid would not contain the human gene because the cuts are not compatible".
Explanation:
One of the basis of genetic engineering is to use the proper restriction enzymes to cut fragments of DNA. After cutting DNA with restriction enzymes most of the time the fragments have sticky ends, which are a few nucleotides that are one stranded and complementary to each other. Scientists take advantage of this characteristic and use the same restriction enzyme to cut genes and plasmid and later put it together with DNA ligases. If genes and plasmids are accidentally cut with different restriction enzyme it is very likely that the plasmid would not contain the human gene because the cuts are not compatible, since no sticky ends are generated.
