Unit 4 Quiz

Question 1

What is mieosis

Answer 1

cell division in sexually reproducing organisms

Question 2

What is crossing over

Answer 2

homologus chromosomes pair up and exchange genetic information

Question 3

What is independent assortment

Answer 3

homologus chromosomes pairs line up in the middle.

Question 4

Interphase

Answer 4

The cells resting phase, the cell spends 90% of its time in this phase and it replicates DNA (creates homologous chromosomes) and grows the overall cell

Question 5

Prophase 1

Answer 5

Nuclear membrane starts to dissolve, homologous chromosomes pair up and exchange genetic information (crossing over)

Question 6

Metaphase 1

Answer 6

Spindle fibers attach to the centromere, homologous pairs line up in the middle through independent assortment

Question 7

Anaphase 1

Answer 7

Spindle fibers start to pull on chromosomes (they break up and move to opposite sides of cell)

Question 8

Telophase 1

Answer 8

Nuclear membrane starts to reform

Question 9

Cytokenisis 1

Answer 9

The cytoplasm pinches in half

Question 10

Prophase 2

Answer 10

Nuclear membrane starts to dissolve again, spindle fibers reform

Question 11

Metaphase 2

Answer 11

Spindle fibers are fully formed and attach to the cetromere, genetically varied chromosome pairs line up on the equator for each cell

Question 12

Anaphase 2

Answer 12

Spindle fibers pull chromosome pair apart, chromatids move to opposite sides of the cell (haploid)

Question 13

Telophase 2

Answer 13

Nuclear membrane starts to form around the chromatids, the cytoplasm pinches in half, 4 haploid cells are created.

Question 14

Cytokinesis 2

Answer 14

Different gametes are created in females VS males (males-sperm cells, spermatogenesis) (females-egg cells, Oogenesis)

Question 15

What is Kline felter Syndrome

Answer 15

Sex chromosome disorder, trisomy or polyploidy (XXY or XXXY)

Question 16

Turner Syndrome

Answer 16

Sex chromosomes disorder, monosomy (X0)

Question 17

Down Syndrome

Answer 17

Autosomal disorder, trisomy #21

Question 18

Patau Cleft Lip

Answer 18

Autosomal disorder, trisomy #13

Question 19

Edward’s Syndrome

Answer 19

Autosomal, trisomy #18

Question 20

cri-du-chat (cry of the cat)

Answer 20

autosomal, broken #15

Question 21

Jacobs syndrome

Answer 21

Sex chromosome, trisomy, XXY

Question 22

Diploid Cell

Answer 22

regular cell, has 46 chromosomes

Question 23

haploid cell

Answer 23

half of the chromosomes 23