Before a cell divides, what must happen to its DNA?

The DNA must replicate or copy itself.

Describe the structure of a chromosome as it appears during cell division.

It condenses into an X-shaped structure with two genetically identical sister chromatids joined by a centromere.

7th Grade•40 minutes

I can describe and explain the basic needs of cells for growth and reproduction.

Cells use a process called cell division to make new cells called daughter cells.

Before a cell divides, its DNA must replicate or copy itself so that the information can be passed on to each daughter cell.

Human somatic cells have 23 pairs of chromosomes for a total of 46, while gametes have a total of 23 chromosomes.

This lesson includes 8 practice questions to reinforce learning.

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1. What is the main purpose of cell division in unicellular organisms?

2. In multicellular organisms, what are two purposes of cell division?

3. What are the sex cells called that are created during a modified example of cell division?

...and 5 more questions

Overview of Cell Division

Nucleus Biology