Unit 8: DNA

Front

What are chromosomes?

Back

Chromosomes are tightly wound strands of DNA that contain genes, which are the instructions for traits in living organisms.

Front

Why is DNA important?

Back

DNA serves as the blueprint for traits of all living things, determining characteristics such as eye color and height.

Front

What does the letter A represent in the nucleotide of DNA?

Back

The letter A represents a nitrogen base in the nucleotide of DNA.

Front

What are traits?

Back

Traits are specific characteristics that are passed on from one generation to the next, such as eye color or hair color.

Front

What is an allele?

Back

An allele is a different version of the same gene, such as blue eyes versus brown eyes.

Front

What is DNA?

Back

DNA (deoxyribonucleic acid) is the molecule that carries genetic information in living organisms.

Front

What is the structure of DNA?

Back

DNA has a double helix structure, resembling a twisted ladder, with two strands made of nucleotides.

Front

What are the four nitrogen bases in DNA?

Back

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

Front

What is the role of deoxyribose in DNA?

Back

Deoxyribose is the sugar component of DNA nucleotides, forming the backbone of the DNA structure.

Front

What is a gene?

Back

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