
Variation
Presentation
•
Science
•
7th - 8th Grade
•
Medium

Kieran Lockyer
Used 7+ times
FREE Resource
14 Slides • 12 Questions
1
Variation
2
Learning Objectives
- Define variation as differences between individuals in a species.
- State that there is variation within a population and give examples.
- State that variation is caused by genetic and environmental factors.
- State the definition of discontinuous and continuous variation.
- Draw bar charts with axis provided - model using visualiser.
3
Multiple Choice
What piece of equipment would you use to measure 50 cm3 of acid
Measuring Cylinder
Balance
4
Multiple Choice
Which of these have kenetic energy?
A person running
A parked car
5
Multiple Choice
What is the dependent variable
The variable you are changing or testing
The Variable you are measuring
The variable you keep the same
6
Variation
Why we all look so different
7
We are all human
But there are differences between us, this is called variation
8
Variation also happens in plants and animals
9
Species
"Any animal/human or plant that can reproduce with each other to produce offspring that will also be able to reproduce"
10
Sexual reproduction introduces variation into a species. This is because the offspring inherit a mixture of DNA from the mother and the father.
11
Genetic (inherited) variation
"Differences between organisms (animals/humans or plants) caused by differences in the DNA they inherit from their parents."
12
Multiple Choice
How much DNA is in the Egg and Sperm
30/70
40/60
50/50
13
Environmental Variation
Differences between organisms caused by environmental factors
14
15
Multiple Choice
Eye colour is
Genetic variation
Environmental variation
16
Multiple Choice
Height
Genetic variation
Environmental variation
17
Multiple Choice
Tatoos
Genetic variation
Environmental variation
18
Multiple Choice
Hair Length
Genetic variation
Environmental variation
19
Multiple Choice
Natural Hair colour
Genetic variation
Environmental variation
20
Multiple Choice
Language
Genetic variation
Environmental variation
21
Multiple Choice
Gender
Genetic variation
Environmental variation
22
23
24
Poll
What is your eye colour?
Blue
Green
Brown
Yellow
25
26
Continuous and Non Continuous Variation
Variation
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