8th grade genetics unit rl

Front

What best describes a DNA molecule?

Back

Double helix.

Front

What is the difference in traits between individual organisms called?

Back

Variation.

Front

What does heterozygous mean?

Back

2 copies of genes that are different.

Front

How many copies of a gene does an organism have for each feature?

Back

2.

Front

What are the 4 DNA bases?

Back

Adenine, thymine, cytosine, guanine.

Front

What is the structure of DNA?

Back

A double helix made of nucleotides.

Front

What is a gene?

Back

A segment of DNA that codes for a protein.

Front

What is the role of ribosomes in protein synthesis?

Back

They translate mRNA into proteins.

Front

What is the difference between DNA and RNA?

Back

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

Front

What is a phenotype?

Back

The observable traits of an organism.