U3P2

Question 1

steps of mitosis

Answer 1

prophase, metaphase, anaphase, telekinesis

Question 2

prophase

Answer 2

chromosomes coil up into short rods

Question 3

cytokinesis

Answer 3

what happens in eukaryotic cells after nucleus divides

Question 4

metaphase 1

Answer 4

stage of meiosis during which homologous pairs line up along the equator of the cell

Question 5

meiosis

Answer 5

guarantees number of chromosomes in gametes is half the number of chromosomes in body cells

Question 6

crossing over

Answer 6

exchange of corresponding segments of DNA that occurs during synapsis

Question 7

haploid cells

Answer 7

1n, cells resulting from meiosis in either males or females

Question 8

result of normal mitotic division

Answer 8

two identical daughter cells

Question 9

mitosis

Answer 9

division of cell’s nucleus

Question 10

genetic variation

Answer 10

result of crossing over during meiosis

Question 11

how many autosomes and sex chromosomes in each cell of human body

Answer 11

22 pairs autosomes, 2 sex chromosomes (determine m/f)

Question 12

of total chromosomes in body cells if diploid 60

Answer 12

60

Question 13

metaphase 1 of mitosis

Answer 13

homologous pairs present

Question 14

how does DNA compact

Answer 14

wraps tightly around histones

Question 15

metaphase

Answer 15

arrangement of all chromosomes along equator

Question 16

haploid (1n)

Answer 16

contains one copy of a chromosome- either mom or dad j

Question 17

diploid (2n)

Answer 17

contains two copies of each chromosome, one mom and one dad

Question 18

tal chromosomes in body cells in organism that has haploid 40

Answer 18

80

Question 19

difference between anaphase of mitosis and anaphase 1 of meiosis

Answer 19

anaphase of mitosis centromere divides

anaphase 1 pairs divide and move one centromere intact

Question 20

what would happen if chromosome number not reduced before sexual production

Answer 20

offspring chromosome # would double compared to parents

Question 21

sexual reproduction

Answer 21

two parents, offspring genetically different, requires meiosis

Question 22

asexual reproduction

Answer 22

one parent, offspring identical, requires mitosis

Question 23

following replication of its DNA

Answer 23

each chromosome contains two chromatids, which are attached to each other by a centromere

Question 24

cancer

Answer 24

caused by mutation in DNA

Question 25

2n-> 2n 2n

Answer 25

mitosis

Question 26

why are muscle cells different from nerve cells

Answer 26

express different genes

Question 27

cell differentiation

Answer 27

process enabling cells to become specialized

Question 28

epigenome

Answer 28

role environment plays in affecting our genomes