2. Gene Genetics Gene: Piece of DNA that determines
What is it?
Gene: Piece of DNA that determines
a characteristic or trait of an
individual

3. Genes give us traits such as hair color….

4. Genes give us traits such as height….

5. Genes make us smart, or not so smart…

6. Polydactyly is a condition of having extra fingers
Sometimes, Genes can mutate and yield
unwanted effects.
Polydactyly is a condition of having
extra fingers

8. Polycephaly is the condition of having
more than one head.

13. Genes are made of …
…DNA

14. Human body cells (somatic) contain 46 strands of DNA that we call chromosomes

15. Each chromosome carries tens of thousands of genes, with the DNA all packaged up neatly.

16. Where do your _____ chromosomes come from? 23 from each parent 46
Mother
Father
23 from each parent
Child

17. Sometimes, mutations in genes help
animals survive in the wild…..
…..then they can pass the mutated gene to
their young.

26. These mutations produce VARIETY – which is essential for evolution to take its course.

27. The Controversial Discovery of DNA’s structure

28. How was DNA discovered?
Read the article on how DNA was discovered and think about how Franklin, Watson & Crick contributed.