Brainscape's Knowledge GenomeTM

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


See full index

Genetics > Cell Division > Flashcards

Cell Division Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

How many successive nuclear divisions?

A

Two

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

How many rounds of DNA Replication?

A

Only One

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  • A pair of chromosomes from each parent.
  • Similar in length, gene position, and centromere location
A

Homologous Pairs

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

One length of DNA which contains genes.

A

Chromosome

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

A condensed chromosome joined at the centromere

A

Chromatid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Two identical chromatids formed by DNA replication

Joined at the Centromere

A

Sister Chromatids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Region on chromosomes that contains kinetochores

A

Centromeres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Cylindrical organelles that develop the spindle fibres.

A

Centrioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Contains two centrioles

Breaks down to allow centrioles to form spindle fibres

A

Centrosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Slender microtubules to which centromeres attach and are pulled apart.

A

Spindle Fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Cytoplasmic division of a cell

A

Cytokinesis

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

Pairing of two homologous chromosomes

A

Synapsis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A pair of two homologous chromosomes

A

Tetrad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Structure on the centromere at which sister chromatids join

A

Kinetochores

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What happens in Interphase?

A

Interesting things happen!

Cell increases in mass

Genetic material doubles

Two centrosomes are produced from a single centrosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens in Prophase I?

A

Homologous chromosomes PAIR UP

Chromosomes thicken and shorten (become visible)

Crossing over happens

Centrosomes move to the opposite sides of the cell.

Spindle Fibres form

Nuclear membrane disintegrates

Nucleolus breaks down

17
Q

What happens in Metaphase I?

A

Chromosomes MEET IN THE MIDDLE!

Chromosomes attach to Spindle Fibres at the centromere

Spindle fibres align the chromosomes along the equatorial plate on each side.

18
Q

What happens in Anaphase I?

A

Chromosomes get PULLED APART

Spindle fibres contract and pull choromatids to the opposite sides of the cell

Sister chromatids remain attached

19
Q

What happens in Telophase I?

A

Now there are TWO!

Chromosomes uncoil

Spindle fibres disintegrate

Centrioles replicate

Nuclear membrane forms

Cell undergoes cytokinesis, forming two haploid cells containing duplicated chromosomes

20
Q

What happens in Prophase ll?

A

Nuclear Membrane breaks down

Centrosomes and Centrioles move to the opposite sides of the cell.

Spindle Fibres form

Genetic material DOES NOT duplicate

21
Q

What happens in Metaphase II?

A

Spindle fibres align the chromosomes along the cell equator

Equatorial metaphase plate is rotated by 90 degrees

22
Q

What happens in Anaphase II?

A

Sister chromatids are pulled apart

Chromosomes move to the opposite sides of the cell

23
Q

What happens in Telophase II?

A

Nuclear membrane forms again

Chromatids lengthen and break apart

Spindle fibres disintegrate

Cell undergoes cytokinesis, resulting in 4 haploid gametes

24
Q

Period of rest that some species enter between Meiosis I and Meiosis II

A

Interkinesis

25
Q

Rearrangement of…

A

Genes and Alleles

26
Q

Offspring with different combination of alleles than parents

A

Recombinants

27
Q

Genetic Diversity achieved by 3 different mechanisms

A

Crossing over of genes

Independent assortment of alleles

Random Fertilisation

28
Q

Non-sister chromatids of a homologous pair exchange genetic material at different locations

A

Crossing Over

29
Q

Homologous chromosomes are aligned at the equatorial plate and distributed evenly in Anaphase I and II

A

Independent Assortment

30
Q

Random event that determines which sperm fertilises which egg

A

Random Fertilisation

31
Q

Division of Somatic (Body Cells)

A

Mitosis

32
Q

Points at which crossing over occurs

A

Chiasmata

Genetics (6 decks)

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