Genetics & Heredity

Subject: Science  ·  Grade level: 8th

Punnett squares, dominant and recessive traits, and Mendel's pea plants. Why do you have your mom's eyes but your grandpa's smile? Genetics is the science of

In this lesson

• DNA: the instruction manual
• Dominant and recessive
• Punnett squares

Key terms

DNA

The molecule that stores genetic instructions.

Gene

A section of DNA that codes for a single trait.

Chromosome

A long, packaged strand of DNA. Humans have 23 pairs.

Allele

A version of a gene. You get one from each parent.

Genetics & Heredity lesson on BrightPath

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