Stages of Mitosis

What happens during anaphase II?

Chromatids move apart (cell still haploid) -cytokinesis begins

What happens during prophase II?

Chromosomes condense (no homologous pairs)

What are the new cells called after mitosis or meiosis?

Daughter cells

What happens during telophase I?

Daughter cells are haploid with replicated chromosomes -cytokinesis

What happens during telophase II?

FINAL PRODUCT=4 daughter cells with 23 single chromatid chromosomes each -cytokinesis occurs

What happens after telophase of mitosis?

each daughter cell goes back into interphase and does its job

What causes diploid cells in gonads to start (or in girls, finish) meiosis?

follicle stimulating hormone turns on meiosis genes (also turns on testosterone and estrogen genes)

What happens during late prophase I?

homologous pairs match up and crossing over occurs

What are homologous chromosomes called after they pair up in prophase I?

tetrad

What happens during gametogenesis?

Sex cells made

What happens during prophase of mitosis?

-chromosomes condense and become visible -centrioles begin moving to opposite poles -spindle fibers start to appear

What happens during metaphase of mitosis?

-chromosomes line up in middle -spindle fibers attach to centromeres

What happens during anaphase of mitosis?

-chromosomes pulled apart at centromere -turn into single chromatid and chromatid move to opposite poles

What happens during telophase of mitosis?

-cytokinesis occurs: the process of splitting cytoplasm (and organelles) into the two new "daughter cells"

What happens during interphase of mitosis?

-normal functioning cell, synthesizing proteins -semi-conservative replication occurs (single chromatid chromosome to double chromatid chromosome) -chromosomes cannot be seen under microscope

What are the stages of mitosis?

1. Interphase 2. Prophase 3. Metaphase 4. Anaphase 5. Telophase (6. Interphase again)

What happens during interkinesis?

1. dormant stage (resting, waiting for meiosis II) 2. not significant in males 3. in females, this could last 8-50 years depending on menopause and puberty

What happens during interphase of meiosis?

1. normal diploid # of chromosomes 2. chromosomes replicated (single chromatid to double) 3. cells to undergo meiosis are located in ovaries or testicles (gonads)

What happens during metaphase II?

Haploid number of replicated chromosomes line up in middle (metaphase plate)

What happens during metaphase I?

Homologous pairs line up in middle (metaphase plate).

What happens during anaphase I?

Homologous pairs separate (to make haploid cell) -cytokinesis occurs

What happens during early prophase I?

chromosomes condense