Which of the following checks DNA for errors?
O
O
A. DNA fingerprinting
O
B. DNA polymerase
O
O
C. Gel electrophoresis
O
D. Restriction endonuclease
SUBMIT

Option B. DNA polymerase, is the correct answer.

Explanation:

DNA polymerase is a material which is responsible for checking errors in the DNA. Sometimes, errors occurs when the nucleotides is entered into the growing strand. When the error occurs, it can be corrected by DNA polymerase or another DNA containing enzyme. Sometimes, DNA is repaired and sometimes dealth occurs and removed from the body.

B. DNA polymerase

Explanation: DNA polymerase is an enzyme that catalyzes the addition of free nucleotides to the primer during replication. DNA polymerase also has a 3'->5' exonuclease activity which double-checks each nucleotide after it is added. The exonuclease activity of the DNA polymerase permits it to remove a newly added mismatched nucleotide. When the polymerase adds a wrong nucleotide, movement of the enzyme to the point where the next nucleotide will be added is halted, this 3'->5' exonuclease activity removes the mismatched nucleotide so that replication can continue.

your answer should be c) enjoy!

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.