7.1 Chromosomes, genes and DNA

• Bio
• Secondary Education
• Age 13

Lesson 7.1

Chromosomes, genes and DNA

19-09-2022

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• I can explain that chromosomes are made of DNA by answering the questions in LessonUp.
• I can explain that each chromosome contains many genes by answering the questions in LessonUp.
• I can explain that genes help to determine an organism’s characteristics by analysing a set of chromosomes.

GOALS

Given ONE similarity of the two "cells".

What job does the nucleus of a cell do?

Chromosomes become
visible when a cell is dividing.

AGREE

DISAGREE

NOT SURE

Chromosomes become
visible when a cell is dividing.

AGREE

DISAGREE

FRUIT FLY

Fruit f ly chromosome

Human  - 46 chromosomes (Human Genome)

Drosophila (fruit fly) - 8 chromosomes

Explain why we cannot usually see the chromosomes in a cell, even using a microscope.

Red blood cells do not contain a nucleus. Because of the lack of nuclei and organelles, mature red blood cells _______________.

1. do not contain cell membrane
2. contain DNA
3. contain chromosomes
4. do not contain genes

Give ONE difference of a chromosome and a gene.

• make a flowchart diagram showing the nuclear structures, from largest to smallest
• provide descriptions about each structure.

Classwork 7

WILF Self - Evaluation: Choose the one(s) that apply (ies) to you.
1 - I know what I'm learning.
2 - I did what I supposed to do today.
3 - I recognize why I'm learning and doing this.

1

2

3

1 and 2

1 and 3

2 and 3

All 3