meiosis

Question 1

Meiosis

Answer 1

process of gamete formations in the reproductive organ

Question 2

Phases of meiosis

Answer 2

• meiosis I: prophase I, metaphase I, anaphase I, telophase I
• meiosis II:…………………

Question 3

Main events in meiosis I and meiosis II

Answer 3

• meiosis I: homologous chromosomes pair up and then separate
• meiosis II: centromeres divide, siter chromatids separate and become daughter chromosomes

Question 4

Homologous chromosome

Answer 4

pair of chromosomes made up of two homologs

Question 5

Crossing over

Answer 5

exchange of genetic material during sexual reproduction between two homologous chromosomes

Question 6

A tetrad

Answer 6

four-part structure that consists of two homologous chromosomes, each composed of two identical chromatids.

Question 7

Chiasma

Answer 7

point of contact between 3 chromatids belonging to homologous chromosomes

Question 8

The differences between anaphase I and anaphase II

Answer 8

• anaphase I: homologous chromosomes undergo independent assortment into daughter cells
  -anaphase II: centromeres divide and daughter chromosomes migrate

Question 9

The differences between telophase I and telophase II

Answer 9

-telophase I: cytokinesis produces 3 daughter cells which are haploid
-telophase II: the nuclear membrane begins to form around the haploid sets of chromosomes

Question 10

The differences between metaphase I and metaphase II

Answer 10

-metaphase I: homologous pairs line up at equator such that maternal or paternal member may be oriented toward either pole
-metaphase II: chromosomes line up at the equator