Genotype & Phenotype 1. Introduction

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Presentation transcript:

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

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

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

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:

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.

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

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

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)