9

18

36

varies

creates gametes for sexual reproduction

maintains genetic continuity and chromosome number

controls cell functions

provides energy for the cells

Each daughter cell produced has only 1/4th the number of chromosomes of the parent cell

Each daughter cell produced has only 1/2 the number of chromosomes as the parent cell

Each daughter cell produced has the same number of chromosomes as the parent cell

Each daughter cell produced has twice the number of chromosomes as the parent cell.

1, 2, 3, 4

2, 3, 1, 4

3, 2, 1, 4

4, 2, 3, 1

prophase

anaphase

metaphase

telophase

absence of cyclins in the DNA

multiple gene mutations on a chromosome in DNA

the presence of genetic defects caused by hereditary disorders

uncontrolled cell growth caused by mutations in genes that control the cell cycle

crossing over in prophase I

independent assortment in metaphase I

homologous chromosomes line up at the equator

all of the choices are correct

haploid/diploid

diploid/haploid

homologous/heterozygous

heterozygous/homologous

24

12

6

3

Meiosis produces sex cells that join to form offspring during sexual reproduction

Meiosis halves the number of chromatids

Meiosis begins with a haploid cell and ends with four diploid cells

Meiosis doubles the number of chromatids

During prophase I, DNA replication takes place, and homologous chromosomes trade places with each other

before lining up in preparation for metaphase.

During prophase I, DNA segments are exchanges between homologous chromosomes, resulting indifferent

combinations of alleles.

During prophase II, fragments of DNA break off of chromosomes and attach to the ends of other

chromosomes, resulting in different gene sequence.

During prophase II, sister chromatids separate from each other, and as they travel to opposite ends of the

cell, DNA segments of nearby chromosomes are exchanged.

Mitosis and meiosis both produces genetic variation

Mitosis results in the production of two genetically identical diploid cells and meiosis produces four non-identical haploid cells

Mitosis and meiosis are both divided into only 4 distinct phasesprophase, metaphase, anaphase and interphase

Mitosis results in the production of two genetically identical diploid cells and meiosis produces four genetically dentical haploid cells