Inheritance

1
Inheritance

• Evolution and Environment 4

2
Objectives

• Explain how genes pass on features in humans.
• Recall who Gregor Mendel was and why he is
  important.

3
Starter

• Draw a two-column table and, with a partner,
  write a list of features about yourselves that
  you feel you have inherited and another list of
  things about yourselves that you feel you have
  not inherited.

4
Keywords

• What do the following mean?
• Genes
• Fertilisation
• Gametes
• Chromosomes

5
What determines our characteristics?

• Our characteristics are determined by our genes.
• They are found on chromosomes which are found in
  the nucleus of every cell in the body.

6
Why is there genetic variation?

• There can be different forms of the same gene,
  these are called Alleles.
• For example the genes for eye colour would have
  different alleles for blue, green, grey eyes etc.

7

• Passing on chromosomes to a child
• Passing information down through the generations
• Passing on genes
• Tongue Rolling

8
Genetic Variation in the class

• Who in the class can roll their tongues?
• Does everyone have lobes on their ears?

9
Mendel and his work on variation

• Look at the following animation on Mendels work.
• How did his work lead to the idea that there are
  different gene types?
• Animation

10
Geneticons

• Game