Which is true of the base pairing seen between two DNA strands?
A. Adenine bonds with guanine.
B. Guanine bonds with thymine.
C. Thymine bonds with cytosine.
D. Cytosine bonds with guanine
E. Guanine bonds with thymine.
D. Cytosine bonds with guanine
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Which type of swab is not suitable for the collection of a viral specimen as a result of its ability to interfere with certain tests?
a. Dacron b. Calcium alginate c. Cotton d. Rayon
The decline of the eugenics movement in the U.S. in the early 20th century resulted from ____
a. breakthroughs in genetic technology b. violent protests by the medical community c. the ability to manipulate gene expression d. social outrage at the number of deaths caused by botched sterilizations e. its misuse for social and political purposes by the Nazis
During PCR, the enzyme DNA ligase is added to the mixture to promote the addition of nucleotides to the growing DNA chain
Indicate whether the statement is true or false
Which group of fishes includes a lineage that migrated out of fresh water and adapted to life on land?
A) ray-finned fishes B) jawless fishes C) lobe-finned fishes D) cartilaginous fishes