What term describes DNA in G1
phase?
• Chromatin
What happens to the DNA in S Phase?
What is DNA called?
• Doubled, duplicated, copied
• Chromatin
What happens to DNA in G2? What is
DNA called at the end of this phase?
• DNA is coiled, condensed, and joined to its
duplicate
• Duplicated chromosome
• Label the centromere.
• Label the sister chromatids
What happens to centrioles and
everything else in the cytoplasm
during G2 phase?
• Centrioles double
• Everything doubles
How would you describe sister
chromatids?
• Joined, identical chromosomes
What is the first phase of mitosis?
• prophase
What happens to the nuclear envelope
during prophase?
• dissolves
What is produced from the centrioles
during prophase?
• Spindle Fibers
Where do spindle fibers attach to
chromosomes?
• centromere
What happens by the end of
prophase?
• Centrioles have moved to opposite poles
• Spindle fibers have attached to the
centromere of the duplicated chromosomes
Name the second phase of mitosis.
• Metaphase
• What does “meta” mean?
• middle
Where do chromosomes align
themselves during metaphase?
• At the equator
Name the third phase of mitosis.
• Anaphase
• What does “ana” mean?
• To separate
What marks the beginning of
anaphase?
• Spindle fibers begin to separate duplicated
chromosomes (sister chromatids)
What do we call the DNA being pulled
towards the poles?
• Unduplicated chromosomes
Name the fourth phase of mitosis.
• Telophase
• What does “telo” mean?
• The end
What marks the beginning of
telophase?
• Unduplicated chromosomes have reached the
poles
What happens to chromosomes during
telophase?
• Contained inside the nuclear membrane
What happens to spindle during
telphase?
• Break down
What happens to the nuclear envelope
during telophase?
• Two new nuclear envelopes form
How many nuclei are produced after
mitosis? How many cells?
• 2 nuclei
• 1 cell
What happens during cytokinesis?
• Everything outside the nucleus in the
cytoplasm split into two separate cells