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Genetics
The study of heredity
(starting text page 86)
Gregor Mendel
1800’s
Observed pea plants
Noticed sometimes plants had traits similar to
parents and sometimes they did not
Mendel’s work formed the foundation of genetics,
the study of heredity
Know the difference
TT
Tt
tt
Tips on Mendel
Mendel realized that individual factors must
control inheritance of traits in plants
The traits exist in pairs. Male and Female
parents contribute each trait.
Some traits are dominant and mask or hide
the other recessive traits.
Chromosome Theory of Inheritance
States that genes are carried from parents to offspring on
chromosomes
Dominant or Recessive?
Heterozygous or Homozygous?
Words to know
Purebred
Traits
Genes
Heredity
Filial
Allele
P Generation
F-1 Generation
F-2 Generation
Hybrid
Phenotype
Genotype