Brazeau - Meiosis

Question 1

What holds together chromosomes for recombination to occur?

Answer 1

Synaptonemal Complex

Question 2

What ensyres proper segregation of homologs?

Answer 2

SC

Question 3

Correct order for stages of meiotic prophase?

Answer 3

Leptotene

Zygotene

Pachytene

Diplotene

Diakinesis

Question 4

What stage are oocytes arrested in?

Answer 4

Prophase - Diplotene

Question 5

When what stage of prophase do axial elements begin to appear?

Answer 5

Leptotene

Question 6

When what stage of prophase do lateral elements begin to appear?

Answer 6

Zygotene

Question 7

When what stage of prophase is synapsis complete?

Answer 7

Pachytene

Question 8

When what stage of prophase are chromosomes held together by chiasmata?

Answer 8

Diplotene

Question 9

When does random assortment of chromosomes occur?

When does recombination occur?

Answer 9

Metaphase I

Prophase I

Question 10

What maintains Cdk1 in arrested oocytes? What does this inhibit?

Answer 10

Cytostatic Factor (CSF)

Inhibits APC Complex

Question 11

What is a regulatory result of fertilization of an arrested oocyte?

Answer 11

Activation of APC Complex via inhibition of Emi2/Erp1, CycB begins to degrade and completion of Meiosis II