1. Fertilization Notes Egg parent cell _ _
Meiosis I: A sperm or egg parent cell replicates each chromosomes into a pair of chromatids, then divides into two cells
A parent cell with a heterozygous genotype will make two cells with different alleles on chromatids
Meiosis II: Each cell divides again without replicating chromatids into two sperm cells or two egg cells
Fertilization: an egg and sperm cell combine to make a zygote
The zygote has one allele from the egg and one allele from the sperm in its genotype
Meiosis 1
Meiosis II
Meiosis II
sperm _
egg_
sperm_
egg_
Fertilization
Fertilization
Meiosis II
Sperm parent cell _ _
Zygote _ _
Zygote _ _
sperm_
egg_
sperm_
egg_
Meiosis 1
Meiosis II
Fertilization
Fertilization
Zygote _ _
Zygote _ _

2. Fertilization Notes Egg parent cell _ _ Meiosis I: Meiosis II:
sperm _
egg_
sperm_
egg_
Fertilization
Fertilization
Meiosis II
Sperm parent cell _ _
Zygote _ _
Zygote _ _
sperm_
egg_
sperm_
egg_
Meiosis 1
Meiosis II
Fertilization
Fertilization
Zygote _ _
Zygote _ _