Unit 8: DNA

Front

What are different versions of the same gene called?

Back

Alleles are different versions of the same gene, such as blue and brown eyes.

Front

In DNA, which base does adenine pair with?

Back

Adenine always pairs with thymine in DNA.

Front

What is the structure that contains tightly wound DNA?

Back

Chromosomes are structures that contain tightly wound DNA.

Front

True or False: A change in the DNA sequence can have a positive, negative, or no effect at all.

Back

True.

Front

What are the building blocks of DNA?

Back

Nucleotides are the building blocks of DNA.

Front

What are the four bases found in DNA?

Back

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

Front

What is the role of DNA in living organisms?

Back

DNA carries genetic information that determines the traits of an organism.

Front

What is a gene?

Back

A gene is a segment of DNA that contains the instructions for making a specific protein.

Front

What is the process by which DNA is copied?

Back

DNA replication is the process by which DNA is copied before cell division.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can affect how genes function.