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2 types of sex cells #1, Meiosis #8, Sam Sporidis, Science 8, December 2,…
2 types of sex cells #1
Homologous chromosomes #2
Most chromosomes are homologous
Identical pairs
The 2 types are male and female
they are called gametes
Meiosis #8
Sex chromosomes #3
Fertilization #9
when a ovum is in contact with a sperm
produces offspring
only three causes Down's syndrome
Male and female types
Down's Syndrome
Only 3 sex chromosomes are present
May cause health issues
Chromosomes:
x-y chromosomes #5
X Y is male
XX is female
Diploid #4
Zygote #10
results in a diploid fertilized ovum
fusion of two haploid gametes
pair of chromosomes
Humans have 23
Gametes
Male or Female
sex cells
Meiosis I #12
Resembles mitosis
Genes cross mix
Meiosis II #13
No duplication
somewhat similar to interphase
Centromeres #11
Structure connection the chromosomes in the middle of the cell
occurs in the process of mitosis or meiosis
Cell division
occurs in haploid sex cells
Sam Sporidis
Science 8
December 2, 2020
Web: Meiosis
Mr. Sharp