Meiosis and Sexual Life Cycles

1
Meiosis and Sexual Life Cycles

• Chapter 13

2
Living things Reproduce!

• Results in similarities and differences between
  offspring and adults
• Heredity or inheritance
• Genetics

3
Offspring acquire genes from parents by
inheriting chromosomes.
4
Asexual Reproduction

• Mitosis
• Parthenogenesis
• Budding
• Fragmentation

5
Role of Meiosis
6
Life Cycle
7
Karyotype
8
Human Life Cycle
9
Different Types of Life Cycles
10
Overview of MEIOSIS
11
Meiosis I the reductional division
12
Meiosis II
13
Mitosis Versus Meiosis
14
Genetic Variation

• Independent Assortment
• 8,388,608 or (223)
• Random Fertilization
• 70,368,744,000,000 or (223)2
• Crossing-over
• 4,951,760,200,000,000,000,000,000,000 or (423)2

15
Independent Assortment