Cell Division

Mitosis

Type of nuclear division that results in two identical daughter cells

Meiosis

Type of nuclear division that results in four genetically different daughter cells with half the chromosome number

Purpose of Mitosis

Growth

Purpose of Meiosis

Sexual reproduction; forms gametes (egg and sperm)

Number of Divisions in Mitosis

One division

Number of Divisions in Meiosis

Two successive divisions

Number of Daughter Cells in Mitosis

Two

Number of Daughter Cells in Meiosis

Four

Chromosome Number in Mitosis

Diploid (same as parent)

Chromosome Number in Meiosis

Haploid (half of parent)

Genetic Identity in Mitosis

Genetically identical to parent cell

Genetic Identity in Meiosis

Genetically different from parent and each other

Occurs In Mitosis

Somatic (body) cells

Occurs In Meiosis

Germ (sex) cells only

Crossing Over in Mitosis

Does not occur

Crossing Over in Meiosis

Occurs during Prophase I

Function of Mitosis

Tissue growth and maintenance

Function of Meiosis

Formation of gametes for reproduction

Prophase in Mitosis

Chromosomes condense and spindle forms

Prophase I in Meiosis

Homologous chromosomes pair up and crossing over happens

Metaphase in Mitosis

Chromosomes align in the middle

Metaphase I in Meiosis

Homologous pairs line up in the center

Anaphase in Mitosis

Sister chromatids are pulled apart

Anaphase I in Meiosis

Homologous chromosomes are separated

Mitosis Genetic Variation

No genetic variation

Meiosis Genetic Variation

Produces variation through recombination and independent assortment

Type of Reproduction in Mitosis

Asexual

Type of Reproduction in Meiosis

Sexual

Example of Mitosis

Skin cell division

Example of Meiosis

Sperm or egg formation