Question

A biochemist isolates and purifies molecules needed for DNA replication. When DNA
is added, replication occurs, but each DNA molecule consists of a normal strand
paired with numerous segments of DNA a few hundred nucleotides long. What has
probably been left out of the mixture?
(A) DNA polymerase
(B) DNA ligase
(C) Okazaki fragments
(D) primase
​

Answer 1

Answer:

B)DNA ligase

Explanation:

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Answer 2

Answer:

Option(B)DNA ligase is the correct answer.

Explanation:

• Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid.

• The DNA of an individual can be found in almost all of their cells.

• By facilitating the formation of a phosphodiester bond, the enzyme known as DNA ligase makes it easier to link DNA strands together.

• Although some forms may only mend double-strand breaks, it contributes to the repair of single-strand breaks in duplex DNA in living things.

• In addition to mending DNA damage, DNA ligase also joins breaks in the phosphodiester backbone that arise during recombination and replication to preserve genomic integrity.

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