chapter1 document 3

Question 1

Meiosis

Answer 1

is a reductional cell division which a diploid stem cell gives rise to 4 different haploid gametes. It takes place in the gonads

Question 2

First cell division

Answer 2

Reductional (chromosomes number is decreased into half) and is preceded by DNA replication

Question 3

Second cell division

Answer 3

Equational (number of chromosomes is constant) without interphase

Question 4

Importance of meiosis

Answer 4

Meiosis is important for production of gametes needed for fertilization

Question 5

prophase I

Answer 5

Crossing over Pairing of homologous chromosomes, formation of tetrads, synapse

Question 6

metaphase I

Answer 6

during prophase I I and the Homologous chromosomes align as tetrads at the equatorial plate

Question 7

Anaphase I

Answer 7

random orientation of chromosomes lead to variety among gametes, random segregation of homologous chromosomes

Question 8

telophase I

Answer 8

2 daughter cells made up of n chromosomes , 2 sister chromatids each

Question 9

metaphase II

Answer 9

Individual n chromosomes align at the equatorial plate

Question 10

anaphase II

Answer 10

segregation of sister chromnatides N chromosomes