A. Each of the new double stranded DNA molecules contains one of the original intact strands and one completely new strand.
Explanation:
DNA replication is a semi-conservative process. During DNA replication, the two parental DNA strands are separated to serve as the template. DNA polymerase extends the RNA primers by the addition of the deoxynucleotides complementary to the sequence of the template DNA strand.
After replication of complete length of template DNA, two DNA double helices are formed. Each of the new DNA double helices contains one parental template strand and one newly formed DNA strand. This is why the process is called to be semi-conservative.
To visualise the DNA, the gel is stained with a fluorescent dye that binds to the DNA, and is placed on an ultraviolet transilluminator which will show up the stained DNA as bright bands. Alternatively the dye can be mixed with the gel before it is poured
D. Heterotrophs EXPLANATION: Heterotrophs cannot produce its own food so it kills and eats other organisms for energy. Plants are autotrophs which means they can make their own foods.
Bones
produce blood cells. The red bone
marrow found in the connective tissue of certain bones is the site of blood
cell production. The correct answer between all the choices given
is the second choice or letter B. I am hoping that this answer has satisfied
your query and it will be able to help you in your endeavor, and if you would
like, feel free to ask another question.
