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Medical Cell Biology and Genetics > L13- Mitosis > Flashcards

L13- Mitosis Flashcards

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1
Q

interphase is the

A

longest part of the cell cycle

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2
Q

what happens in interphase

A

cell grows and copies its organelles and DNA

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3
Q

mitosis simple

A

chromosomes align, separate and move into new daughter cells

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4
Q

M

A

cell division

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5
Q

G1

A

the cell grows, organelles are copied, mRNA and proteins synthesised in preparation for subsequent steps leading to mitosis

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6
Q

S

A

DNA replication

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7
Q

G2

A

= Organelle replication and reorganisation in preparation for mitosis

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8
Q

unreplicated chromosome structure

A

one chromosome (one chromatid)= one DNA molecule

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9
Q

replicated chromosome structure

A

one chromosome (two chromatids)= two DNA (identical) molecules

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10
Q

centromere links the

A

sister chromatids and consists of repetitive sequences

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11
Q

chromosome scan be grouped according to

A

size and shape

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12
Q

how many chrosmsoems in human cell

A

46

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13
Q

telomeres are

A

repetitive sequences at the end of each chromssomes

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14
Q

homologous chromosomes

A

have the same DNA sequences- the same genes

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15
Q

genes on homologous chromosomes may bey

A

different variants- alleles

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16
Q

mitosis is

A

cell division for somatic cells

17
Q

mitosis produces

A

two identical daughter cells (same number of chromosome content as parental cell)

18
Q

how many mitotic rounds during development

A

50

19
Q

order of mitosis

A 
Interphase
prophase
pro metaphase
metaphase
anaphase
telophase
cytokinesis
20
Q

prophase

A
  • Nuclear envelop disintegrates
  • Chromosomes condense
  • Mitotic spindle starts to forms
21
Q

prometaphased

A

Spindles formed which connect to the kinetochore

22
Q

metaphase

A
  • Chromosomes randomly line up at the metaphase plate
23
Q

Anaphase

A
  • Kinetochore microtubules contract chromatids towards the poles
  • Go to different poles (now become chromosomes (not called chromatids anymore)
24
Q

telophase

A
  • Spindle disappears
  • Nuclear membrane reforms
  • Nucleolus reappears
  • Chromosomes decondense
25
Q

cytokinesis

A

Cleavage of daughter cells with equal number of chromosomes

Medical Cell Biology and Genetics (33 decks)

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