Gregor Mendel Father of Modern Genetics

Gregor Mendel Father of modern Genetics

Mendel’s Experiment

Crossed two tall plants Tall x Tall = All tall

Mendel’s Experiment Crossed two short plants –Short x Short = All short

Mendel’s Experiment Crossed Tall and Short plants Tall x Short = All Tall Tall x Tall =75% Tall & 25% Short

Mendel’s Experiment

Mendel’s Findings –There are two factors that control every trait (genes) –Different forms of those genes are called alleles

Mendel’s Findings The rule of Dominance. –Dominant Genes: Some genes dominate over other genes. (Tall) (T) –Recessive Genes: Some genes are dominated over (Short) (t)

Mendel’s Results

Law of independent assortment

Mendel’s Findings The Law of Segregation –The two genes for a trait separate into different gametes (sex cells) during gamete formation (Meiosis)

Important Vocabulary –Genotype:The gene combination an organism has for a trait. Homozygous Dominant: Both genes are the dominant Allele (TT) Homozygous Recessive: Both genes are the recessive allele (tt) Heterozygous: Both genes are different (Tt) –Phenotype: How the gene combinations show or are expressed