AJH DNA Practice 1

Front

What must be copied before cells can divide?

Back

DNA

Front

How many chromosomes do human cells have?

Back

46

Front

What is a segment of DNA that carries hereditary instructional information?

Back

Gene

Front

What is DNA made up of?

Back

Nucleotides

Front

Why is DNA important?

Back

It serves as the blueprint for traits of all living things.

Front

What are the building blocks of DNA?

Back

Nucleotides consist of a sugar, a phosphate group, and a nitrogenous base.

Front

What is the shape of DNA?

Back

Double helix.

Front

What are chromosomes?

Back

Structures within cells that contain DNA.

Front

What is the function of genes?

Back

To provide instructions for making proteins.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to changes in traits.