Meiosis

Question 1

Meiosis 1 Prophase 1

Answer 1

Leptotene
Zygotene
Pachytene 
Diplotene
Diakinesis 
Metaphase 1
Anaphase 1
Telophase 1
Interkinesis
Meiosis 2

Question 2

Leptotene

Answer 2

Chromosomes become visible

Question 3

Zygotene

Answer 3

Homologous begin to pair, or synapse. This synapse is very exact and precise taking place point for point. Sc begins to form

Question 4

Pachytene

Answer 4

Completion of synapse to form bivalents. Sc is fully formed and can be seen during pachytene. Crossing over occurs.

Question 5

Diplotene

Answer 5

Separation of homologs is initiated except at point where chiasmata occurs

Question 6

Diakinesis

Answer 6

Chromosomes reach maximum contraction. The synapsed homologs become well spread out in the nucleus. Chiasmata gradually terminalize. Lastly the nucleolus disappears and the nuclear spindle begins to form.

Question 7

Metaphase 1

Answer 7

Bivalents align at metaphase plate

Question 8

Anaphase 1

Answer 8

Separation of homologous chromosomes

Question 9

Telophase 1

Answer 9

2 Haploid nuclei are formed

Question 10

Interkinesis

Answer 10

There is considerable variation from one species to another. Some organisms follow this process with a delay of varying duration existing between the first and second meiotic divisions. However in some organisms the anaphase chromosomes of the first cell division pass directly to metaphase of the second cell division.

Question 11

Meiosis

Answer 11

Specialized cell division where gametes (sex cells) arise as a result of specialized cells known as gonial in animals or mother cells in plants. Chromosome number is the same in these cells as it is in somatic or body cells

Question 12

Meiosis cell divisions

Answer 12

Meiosis 1 and Meiosis 2

Question 13

Meiocyte

Answer 13

Any cell whose next act is to undergo meiosis
Plants- spores or pollen
Animals- sperm and eggs

Question 14

2 main reasons we can get many genetically different gametes

Answer 14

1. Crossing over

2. Random orientation of homologous pairs (paternal and maternal chromosomes)