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 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