Bio Lab 6 and 7
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13 Terms
What phase does the cell spend most of its life in
Interphase
What is the order of phases in mitosis
Interphase, prophase, metaphase, anaphase, telophase and cytokinesis
what happens during prophase
chromosomes condense and become visible
what happens during metaphase
chromosomes line up single file along the equator of cell
what happens during anaphase
sister chromosomes are pulled apart to opposite sides
What happnes during telophase and cytokinesis
two new nuclei form and the cell splits in half
what is the goal of meiosis
sexual reproduction
what is the outcome of meiosis
four genetically unique, haploid (n) gametes (Sperm or egg cells).
humans have 46 chromosomes after meiosis how many are left
23
what happens in anaphase 1
the homologous chromosomes are pulled apart
what happens in anaphase 2
the sister chromatids are pulled apart
what is crossing over
during prophase 1 homologous chromosomes pair up and physically trade pieces of DNA. This is the untimate source of genetic variation
