Replication and Genetic Engineering Review

Front

What is the first step in DNA replication?

Back

DNA Helicase unwinds the original DNA strand.

Front

What percentage of DNA sample is cytosine if the percentage of guanine is 28%?

Back

28% (According to Chargaff's rules, the amount of cytosine equals the amount of guanine in DNA).

Front

What is an example of genetic engineering?

Back

Putting the gene for bioluminescence into a fish.

Front

What is the second step in DNA replication?

Back

RNA Primase lays down RNA primer for new nucleotide bases.

Front

What is the basic unit of DNA?

Back

Nucleotide.

Front

What role does DNA polymerase play in DNA replication?

Back

DNA polymerase builds new strands by bringing in new nucleotide bases.

Front

What is the function of ligase in DNA replication?

Back

Ligase knits together fragments on the lagging strand.

Front

What is the structure of DNA commonly referred to as?

Back

Double helix.

Front

What are the four nucleotide bases in DNA?

Back

Adenine (A), Thymine (T), Cytosine (C), Guanine (G).

Front

What is Chargaff's rule?

Back

In DNA, the amount of adenine equals the amount of thymine, and the amount of cytosine equals the amount of guanine.