1. Genotype & Phenotype
1. Introduction
1a. The genetic makeup of a person is their genotype.
- Eyelashes: EE, ee, Ee
1b. The physical characteristics that result from the genotype is its phenotype.
- Eyelashes: Long & Short

2. Genotype & Phenotype
2. Homozygous
2a. Organism with two identical alleles for a trait.
Eyelashes: EE or ee
EE= Homozygous Dominant
ee= homozygous recessive

3. Genotype & Phenotype 3a. Organism with different alleles for a trait
3. Heterozygous
3a. Organism with different alleles for a trait
Eyelashes: Ee

4. Checkpoint 1 Allele for purple flowers is dominant (P).
Allele for white flowers is recessive (p).
What are the following genotypes
and phenotypes?
Homozygous recessive:
Homozygous dominant:
Heterozygous:

5. Punnett Squares
4. Punnett Squares
4a. A punnett square is used to predict the probability that the offspring of a pairing will have a specific genotype and phenotype.

6. Punnett Squares
5. Parent Generation
5a. The alleles on one parent are placed in a row on top.
5b. The alleles for the other parent are placed in a column on the side of the matrix.
5c. These are the Parent (P) Generation

7. Checkpoint 2
A green plant (GG) is being crossed with another green plant (Gg)
Genotypic Ratio:
Phenotypes:

8. Punnett Squares
6. F1 and F2
Generations
6a. The offspring of the P generation are the First Filial Generation (F1).
6b. If two F1 generations that produce offspring the possible genotypes and phenotypes are the Second Filial Generation (F2)