Parts Of DNA
Nitrogen Bases
DNA Structure
DNA Replication
Genes & Traits
100

This part of DNA carries the genetic instructions using A, T, C, and G

What are nitrogen bases?

100

Adenine pairs with this base in DNA.

 What is thymine?

100

The shape of DNA is called this.

What is a double helix?

100

This process copies DNA.

What is DNA replication?

100

A section of DNA that codes for a trait.

What is a gene?

200

This sugar is found in DNA

What is deoxyribose?

200

Cytosine always pairs with this base.

What is guanine?

200

DNA looks like this twisted object.

What is a twisted ladder?

200

This enzyme “unzips” DNA.

What is helicase?

200

Humans normally have this many chromosomes.

What is 46?

300

This part forms the backbone of DNA with sugar.

What is phosphate?

300

These are the four nitrogen bases in DNA.

What are adenine, thymine, cytosine, and guanine?

300

The “rungs” of the DNA ladder are made of these.

What are base pairs?

300

This enzyme adds new matching nucleotides.

What is DNA polymerase?

300

This determines whether a trait is shown or hidden.

What are dominant and recessive alleles?

400

A DNA building block made of sugar, phosphate, and a base.

What is a nucleotide? 

400

This base is found in RNA instead of thymine.

What is uracil?

400

The scientist Rosalind Franklin helped discover DNA’s shape using this technology.

What is X-ray diffraction?

400

DNA replication happens before this cell process.

What is cell division?

400

Genes are found on these structures in the nucleus.

What are chromosomes?

500

The two outside strands of DNA are called this.

What is the sugar-phosphate backbone?

500

A and G are in this base group.

 What are purines?

500

The two strands of DNA run in these opposite directions.

What is antiparallel?

500

This rule explains why A pairs with T and C pairs with G.

What is complementary base pairing?

500

This scientist discovered pea plant inheritance.

What is Gregor Mendel