Mitosis

Question 1

what are karyotypes

Answer 1

the number and visual appearance of the chromosomes in the cell nuclei of an organism or species.

Question 2

what do multicellular organisms depend on cell division for

Answer 2

• development from a fertilized cell
• growth to adult
• repair

Question 3

describe what duplicated chromosomes are

Answer 3

• are 2 sister chromatids, which later sperate

Question 4

what are the 5 phases of mitosis

Answer 4

• prophase
• prometaphase
• metaphase
• anaphase
• telophase

Question 5

what is produced through mitosis

Answer 5

• produces 2 genetically identical identical daughter cells

Question 6

describe what happens in Prophase

Answer 6

• is the first phase of mitosis,
• centrioles move to opposite poles
• chromosomes become visible

Question 7

describe what happens in Prometaphase

Answer 7

-the nuclear envelope breaks down (in many but not all eukaryotes) and the chromosomes attach to the mitotic spindle

Question 8

describe what happens in Metaphase

Answer 8

• chromosomes are lined up at the metaphase plate

- each sister chromatid is attaches to a spindle fiber originating from opposite poles

Question 9

describe what happens in anaphase

Answer 9

• Centromeres split into 2

- sister chromatids are pulled towards opposite piles

Question 10

describe what happens in telophase and cytokinesis

Answer 10

• chromosomes arrive at opposite poles and begin to decondense
• nuclear envelope material surrounds each set of chromosomes
• the mitotic spindle breaks down
  spindle fibers continues to push poles apart