1 Father of genetics. Studied traits in pea plants.

2 Gregor Mendel

3 Any characteristic that can be passed be inherited from parent to offspring.

4 Trait

5 Alternative forms of a trait.

6 Alleles

7 Section of chromosome (DNA) that codes for a specific trait.

8 Gene

9 A diagram of the genetic history of an individual: can show how a trait is inherited over several generations of a family. (a genetic family tree)

10 Pedigree

11 Genotype of an individual with two different alleles for a given trait.

12 Heterozygous

13 Genotype of an individual with two of the same alleles for a given trait.

14 Homozygous

15 Alleles for a trait seperate randomly and independently of each other.

16 Law of Independent Assortment

17 Each pair of alleles segregates (seperates)during gamete formation. Each gamete contains one allele from each pair.

18 The Law of Segregation

19 Occurs when neither allele is dominant. They both have an affect on the heterozygous individual which shows a phenotype between the two homozygous phenotypes.

20 Incomplete Dominance

21 The genetic make-up of an organism.

22 Genotype

23 The external appearance of an individual determined by it’s genotype.

24 Phenotype