1. The Story of Genetics It takes two, to make one!

2. Vocabulary List Heredity – The passing of traits from parents to offspring. Trait – is a characteristic that is inherited.

3. Gene One set of instructions for an inherited trait from each of your parents. Allele It takes 2 genes to control a trait. One from the male and one from the female. The combination of the 2 genes control characteristics.

4. Genotype The genetic makeup of an organism. The combination of genes for one or more specific traits. Genotype

5. Phenotype The appearance or detectable characteristic of an organism. The physical expression of the genotype.

6. Dominant The trait that is observed. When this gene is present it is what will show. B-brown eyes b-blue eyes BB or Bb

7. Recessive The less dominant trait. The trait that reappears in the 2nd generation when parents of different traits are bred. Need to have 2 alleles the same for this to show. B-brown eyes b-blue eyes bb

8. Homozygous or Purebred Like alleles create the trait both alleles are dominant or both are recessive or

9. Heterozygous or Hybrid The alleles responsible for the trait are different, one dominant and one recessive.

10. Self-pollinating plant - Contains both male and female reproductive structures. It can fertilize itself. True-breeding plant – a plant that always produces offspring with the same traits as the parent.

11. Genes – pieces of DNA that carry hereditary instructions. They are found on chromosomes.