Cell Division (Mitosis & Meiosis) (Ch. 11, 12-4) Flashcards

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1
Q

What is the correct sequence of the cell cycle?

A

g1, s, g2, = interphase

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2
Q

During which of the phases of interphase does DNA replication take place?

A

S phase- sythesis phase

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3
Q

What are the phases of mitosis?

A

Prophase, metaphase, anaphase, telophase

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4
Q

What takes place in prophase?

A

Prophase - centrioles, nuclear membrane, chromatin, spindle fibers

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5
Q

What takes place in metaphase?

A

chromosomes line up

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6
Q

What takes place in anaphase?

A

centromere divide & sister chromatids seperate

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7
Q

What takes place in telophase?

A

(Opposite of prophase) cleavage furrow, spindle fibers, nuclear membrane, chromosomes

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8
Q

The two sister chromatids are held together by the _

A

centromere

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9
Q

During what phase of mitosis do the centromeres split and chromatids seperate?

A

stage 3, anaphase

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10
Q

Compare and contrast mitosis and meiosis

A

mitosis - division of the cell nucleus (body cell)
meiosis - makes haploid cells (sex cells)

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11
Q

How is a zygote formed?

A

When an egg and a sperm combine. (fertilization)

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12
Q

What is crossing over? During which phase of meiosis does crossing over occur?

A

crossing over is the exchange of DNA between two homologous chromosome
- prophase 1

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