Lesson: DNA in Eukaryotes Biology

In this lesson, we will learn how to describe the structure of chromosomes in eukaryotic cells and explain the role of histones and nucleosomes in forming chromosomes.

Lesson Plan

Students will be able to

define the terms chromosome, chromatin, and nucleosome,
describe how DNA coils around histones and condenses to form chromosomes,
recall that chromosomes appear differently depending on the stage of the cell cycle.

Lesson Video

Lesson Explainer

Lesson Worksheet

Q1:

DNA is wrapped around proteins and coiled into loops to form chromatin. At what point will chromatin condense to form visible chromosomes?

Q2:

In the initial stages of chromosome formation, double-stranded DNA wraps around specialized proteins. What are these proteins called?

Q3:

In the process of chromosome development, nucleosomes are formed. Which of the following best describes how nucleosomes are formed?