Genetics Study of heredity Mendel and pea plants Fertilization-
sperm and egg join
Slide 3
Trait Ex. eye color, height Hybrids- crosses between parents
are true-breeding types
Slide 4
Slide 5
Gene- sequence of DNA that codes for a specific trait Ex. Eye
color Allele- version of a gene Ex. blue eye color Diploid
organisms have two alleles
Slide 6
Types of Alleles Dominant Recessive
Slide 7
Mendels Principle of Segregation: Two members of a gene pair
segregate (separate) from each other during the formation of
gametes. Animation of Segregation
Slide 8
Mendels Principle of Independent Assortment: Alleles for
different traits assort independently of one another. Genes on
different chromosomes behave independently in gamete
production.
Slide 9
Diploid- 2 sets of chromosomes Haploid- 1 set of chromosomes
-Gametes
Slide 10
Genotype Ex. BB Phenotype Ex. Brown eyes
Slide 11
Homozygous Heterozygous
Slide 12
Monohybrid cross
Slide 13
Dihybrid Cross
Slide 14
Genetics Laws Independent Assortment Segregation
Slide 15
Shape of Earlobe Recessive Dominant
Slide 16
Eye Color DominantRecessive
Slide 17
Shape of Hairline DominantRecessive
Slide 18
Tongue Roll DominantRecessive
Slide 19
Tongue Fold Recessive Dominant
Slide 20
Shape of Little Finger Recessive Dominant
Slide 21
Hair on Middle Joint Recessive Dominant
Slide 22
Hair Color Recessive Dominant Red Hair Any shadeAny Other Color
Hair
Slide 23
Hair Type Dominant Recessive
Slide 24
Eyelash Length Recessive Dominant
Slide 25
Number of Fingers Recessive Dominant
Slide 26
Cleft Chin Recessive Dominant
Slide 27
Dimples Dominant Recessive
Slide 28
Freckles Dominant Recessive
Slide 29
Hand Clasping Dominant Recessive 55% of People 45% of
People