Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

anatomy and physiology > MEosis > Flashcards

MEosis Flashcards

1
Q

when does MEosis occur?
how many stages are there?
how many daughter are reproduced?

A

before fertilisation
8 stages
4 daughter cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the 8 stages of MEosis

A

Prophase 1
Metaphase 1
Anaphase 1
Telophase 1
Prophase 2
Metaphase 2
Anaphase 2
Interphase 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what happens during prophase 1

A
  • starts with specialised (germ cell) diploid chromosomes
  • identical chromosomes lie side by side, and duplicate
  • recombination (crossing)- new combination of genes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what happens during metaphase 1

A
  • homologous (same) pairs of chromosomes line at the equator
  • fibrous spindles start to form
  • chromosomes arrange in pairs (unlike mitosis)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what happens during anaphase 1

A
  • pairs separate into chromatids, migrate along the spindle fibres towards the end of the cell
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what happens during telophase 1

A
  • first meiotic division, cytoplasm starts to divide, nuclear membrane doesn’t reform
  • now have 2 daughter cells 2 cells within 4 chromatids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what happens during prophase 2

A
  • transitionary phase, no replication as need haploid number of chromosomes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what happens during metaphase 2

A
  • chromosomes line up in the middle, attach to each end of spindle apparatus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what happens during anaphase 2

A
  • spindle fibres constrict, pulling chromatids apart from centromere, moves to opposite ends
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what happens during interphase 2

A
  • cytoplasm divides and nuclear membrane reforms
  • 4 cells made with 2 chromatids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what are the 5 stages of Mitosis?

A

Prophase
Metaphase
Anaphase
Telophase
Interphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what happens during Prophase?

A
  • chromosomes already replicated, nuclear membrane breaks down
  • chromosomes contract. smaller/fatter
  • centrioles are at end of each cell
  • spindle fibres start to form
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what happens during Metaphase?

A
  • chromosomes line up at the equator (middle)
  • chromatids draw apart from centromere
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what happens during Anaphase?

A
  • chromosomes attach themselves to spindle fibres
  • chromatids move apart to opposite poles of the cell
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what happens during Telophase?

A
  • chromatids will be new chromosomes for daughter cells
  • spindle fibres break down
  • nuclear membrane reforms itself
  • cell constricts (divides into 2)- cytokinesis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what happens during Interphase?

A
  • rest stage to prepare for replication
  • DNA makes a copy of itself - ready for prophase
17
Q

Mitosis vs Meiosis

A

somatic vs sex/germ cells
diploid vs haploid
2 daughter vs 4 daughter
identical cells vs differ cells
meiosis = Genetic recombination occurs (genes from male and female rearrange themselves during division)

anatomy and physiology (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions