Mitosis and Meiosis

Question 1

Parts of mitosis by order

Answer 1

Prophase
Metaphase
Anaphase
Telophase

Question 2

The chromosome has two …

Answer 2

Chromatids

Question 3

How many telomeres are in a chromosome?

Answer 3

4

Question 4

G1

Amount of chromosomes-n and DNA-c

Answer 4

2c, 2n

Question 5

S phase

Amount of chromosomes-n and DNA-c

Answer 5

4c, 2n

Question 6

Atypical Mitosis - what is different from the typical

Answer 6

Different cells outcome or Mosaicism

Question 7

What is an hallmark of an endomitosis?

Answer 7

Giant cell - polythene chromosome

Question 8

Tripolar metaphase - which cells?

Answer 8

Tumor cells

Question 9

Anaphase lag -

Answer 9

Error - Loss of chromatid during mitosis by lack of kinetochore attachment

Question 10

Non-disjunction

Answer 10

Causes Aneuploid cells formation: Two mitotitc microtubule from the same side attach to the same chromosome
Could yield Down syndrome

Question 11

Bridge formation

Answer 11

Attachment to same chromatid from opposing side - yields fragmentation

Question 12

Non disjunction of all 23 chromosome will cause what number of n in each cell?

Answer 12

In the losing side 2(n-1)

In the winning side 2(n+1)

Question 13

What is the change in c (dna amount ) in meiosis?

Answer 13

2c-4c-2c-1c

Question 14

By the end of meiosis 1, what is the number of n?

Answer 14

1n

Question 15

By the end of meiosis 2, what is the number of n?

Answer 15

1n

Question 16

When does crossing over occurs?

Answer 16

Prophase 1 - Pachytene

Question 17

Homologous chromosomes -

Answer 17

Same genes different alleles

Question 18

Parts of prophase 1 - Leptotene

Answer 18

Standing next to each other

Question 19

Parts of prophase 1- Zygoten

Answer 19

Synapse between the homologous chromosomes

Question 20

Parts of prophase 1- Peachyten

Answer 20

Exchange of genetic material as crossing over - homologous recombination

Question 21

Parts of prophase 1- Diplotene

Answer 21

Attachment after crossing over (chiazmma)

Question 22

Parts of prophase 1- Diakenesis

Answer 22

Further chromosome condensation

Question 23

Number of human gene variation in homologous recombination?

Answer 23

2^23

Question 24

How many genomes are there in a diploid cell?

Answer 24

2