Dominant and Recessive Traits (Part 2)

What You'll Learn

Dominant alleles are expressed when present, while recessive alleles are only expressed when two copies are present. A person with one dominant and one recessive allele shows the dominant trait.

Key Words

chromosome
mitosis
trait

Materials Needed

scissors
microscope (or magnifying glass)
slides

Safety First

Do not look directly at the sun or bright lights.
Clean up spills immediately to prevent slipping.

Steps

Step 1 — Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 — Do

Compare and contrast prokaryotic and eukaryotic cells. Create a Venn diagram showing their similarities and differences.

Step 3 — Observe

Note any unexpected results and think about why they happened.

Step 4 — Record

Share your findings with the class or a partner and discuss what you learned.

Check Your Understanding

Question 1

1 of 3

What is a dominant trait?