Meiosis and Mitosis comparision

Mitosis:• If a cell wants to make a duplicate

of itself, it first must copy its DNA (part of a chromosome).

• The copies then must be separated & sorted into two sides of the cell.

• The cell then splits in two. Part of each parent is carried to the two new cells.

• Results in cells such as internal organs, skin, bones, blood, etc.

Mitosis

Mitosis

Meiosis:• it first must copy its DNA (part of a

chromosome).

• Results in reproductive cells (sperm, eggs, etc).

• Part of each parent is carried to the four new cells.

• Meiosis has evolved to solve a problem.

• The problem is this: Genetic Diversity of organisms – that is, they combine their genes together (creating genetic diversity).

• Why would this be a problem?

Meiosis

Meiosis

This may you remember these terms:

• MITosis takes the cell and Makes It Two (diploid)

• Meiosis has to do with sex cells (gametes)

• From the cell’s point of view:– mITosis results in Identical Twins (diploid)– mEioSis results in Egg and Sperm (haploid)

Clyde Freeman Herreid – Dept. of Biological Sciences: Buffalo State Univ. of New York

Mitosis: Meiosis:

Each resulting cell still has chromosomes from mom & dad

Comparision

Create a table and put the differences and similarities of Mitosis and Meiosis in it:

Mitosis Both Meiosis

1) Produces diploid cells 2) Produces haploid cells

1) Divide cells

References

• Yvonne Norman: Senior – Portland State University

• February 2009