Answer:
DNA polymerase
Explanation:
The process in which DNA make its copies is called DNA replication.
It is true that DNA do not have any catalytic activity in the cells but there are several enzymes which participate in the process of DNA replication and performs different functions. DNA Polymerase is one of the key enzyme that participate in the process and catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA.
Arthur Kornberg in 1956 discovered DNA polymerase along with his colleague in Escherichia coli. DNA Polymerase catalyzes the addition of phosphodiester bonds with the help of formation of hydrogen bonds between the adjacent strands of DNA and build the backbone of DNA. Other functions of DNA polymerase involves synthesis of DNA from the RNA primers , helps in the elongation of leading strand, and DNA sequencing.
Hence, DNA polymerase is catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA.
Answer: - ligates DNA strands to one another.
Recombinase is an enzyme that catalyze site specific recombination events within DNA. In meiosis it helps to generate new combination of alleles in the event of crossing over involves genetic recombination. It recognizes specific DNA sequence, mediates cleavage of phosphodiester bonds in DNA, strand exchange between homologous chromosomes, repairs the mismatched DNA bases. It does not ligate DNA strands to one another this is performed by another enzyme named DNA Ligase.
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