Chromosomes Genes and DNA

Front

What is a gene mutation?

Back

A gene mutation is when one nucleotide in a gene is affected.

Front

What do genes control?

Back

Genes control traits.

Front

What are the three levels of your genetic code in order from smallest to largest?

Back

The three levels are DNA, gene, and chromosomes.

Front

How many chromosomes does a human have in every cell?

Back

Humans have 46 chromosomes in every cell.

Front

What shape does DNA have?

Back

DNA has a twisted shape called a double helix.

Front

What is the basic unit of heredity?

Back

The basic unit of heredity is a gene.

Front

What are chromosomes made of?

Back

Chromosomes are made of DNA and proteins.

Front

How many pairs of chromosomes do humans have?

Back

Humans have 23 pairs of chromosomes.

Front

What is the function of DNA?

Back

The function of DNA is to store and transmit genetic information.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.