Day 11 - Meiosis

Question 1

This is the reduction cell division or its reduced by half from 46 to 23 chromosomes

Answer 1

Meiosis I

Question 2

This is the equational cell division maintaining 23 chromosomes with 4 daughter cells

Answer 2

Meiosis II

Question 3

Explain the process of meiosis

Answer 3

Prophase I - chromosomes coil, nuclear envelope disappears and this is where crossing over happens
Metaphase I - forms in 1 line
Anaphase I - 2 chromosomes separates
Telophase I - it arrives at the opposite sides
Cytokinesis - it splits the cytoplasm
Prophase II - chromosome recondense
Metaphase II - Each daughter cell line up
Anaphase II - separated the centromere
Telophase II - nuclear envelope reappear
Cytokinesis - division in cytoplasm

Question 4

This is the protein structure that forms on a chromatid. It allows it to attach to the spindle

Answer 4

Kinetochore

Question 5

This phase is the replication of coiled chromosomes

Answer 5

Leptonema

Question 6

The homologous begin to pair and twist

Answer 6

Zygonema

Question 7

It is the pairing of 4 chromatids (bivalent)

Answer 7

Synapsis

Question 8

The chromosomes become shorter and thicker

Answer 8

Pachynema

Question 9

The exchange of chromosome region to ensure genetic variability

Answer 9

Crossing over

Question 10

The 2 pairs of sister chromatid separates to 2 non sister chromatid (chiasma)

Answer 10

Diplonema

Question 11

The 4 chromatids are even more condensed nuclear envelope disappears and the spindle forms

Answer 11

Diakinesis