1. Genetics

2. What are genes made of?
Genes are a section of DNA that codes information for making proteins.
Chromosomes are made of DNA
Genes are located on Chromosomes

3. Gregor Mendel

4. Mendel Observed 7 characteristics of pea plants
Plant height
Flower position
Pod color
Pod appearance
Seed texture
Seed color
Flower color
Each characteristic came in 2 traits
Trait: genetically determined characteristic
Examples
Where do you get these traits?

5. Mendel’s experiments P generation F1 generation F2 generation
True-breeding parents: pure for traits
F1 generation
Filial: of a son or daughter
F2 generation

6. Vocabulary Allele- alternative forms of a gene
Represented by letters of the alphabet

7. Vocabulary Dominant-masks the other traits
Capital letters
Recessive-hidden by dominant trait
Lower case letters
Genotype-genetic makeup
Phenotype-organism’s appearance
Homozygous-alleles are the same
BB or bb
Heterozygous –alleles are different Bb

9. Punnett Square
Predicting the probable traits in the offspring.

10. Punnett Square Monohybrid cross- cross of one characteristic.
Homozygous x homozygous
BB x bb
Homozygous x heterozygous
BB x Bb
Heterozygous x heterozygous
Bb x Bb

11. Design A Kid Partners: one represents mother, one father
flip coin to determine allele of an offspring
Heads is dominant, tails recessive