Everything DNA

Front

What does it mean for DNA to be semiconservative?

Back

DNA replication is semiconservative because each new DNA molecule consists of one parental (old) strand and one new strand.

Front

Why is DNA replication necessary?

Back

DNA needs to replicate to ensure that each new cell receives a complete set of genetic information.

Front

What is the complementary DNA strand for ACCGTCGAT?

Back

The complementary strand is TGGCAGCTA.

Front

What effect do harmful mutations have on an organism?

Back

Harmful mutations decrease the chances of survival.

Front

What type of mutation is represented by the sequence change from T-G-A-C-C-A to T-G-A-C-G-A-C-G-A-C-C-A?

Back

This is a duplication mutation.

Front

What are the building blocks of DNA?

Back

The building blocks of DNA are nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.

Front

What are the four nitrogenous bases in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

How do the nitrogenous bases pair in DNA?

Back

Adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G).

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What is the role of DNA polymerase in DNA replication?

Back

DNA polymerase is the enzyme responsible for adding nucleotides to the growing DNA strand during replication.