APII Final Exam

Question 1

Games, or ________

Answer 1

Sex cells

Question 2

Gonads produce _______ and _________

Answer 2

hormones; gametes

Question 3

________ (male gonads): Produce sex cells called sperm

Answer 3

Testes

Question 4

Testes (male ______): Produce sex cells called sperm

Answer 4

Gonads

Question 5

Testes (male gonads): Produce sex cells called ______

Answer 5

Sperm

Question 6

_______ (female gonads): Produce sex cells called ova
(oocytes, eggs)

Answer 6

Ovaries

Question 7

Ovaries (female _______): Produce sex cells called ova
(oocytes, eggs)

Answer 7

Gonads

Question 8

Ovaries (female gonads): Produce sex cells called _____
(oocytes, eggs)

Answer 8

Ova

Question 9

Ovaries (female gonads): Produce sex cells called ova
(_______, _______)

Answer 9

Oocytes; eggs

Question 10

Sex cells have ___ chromosomes, compared to 46
chromosomes in other body cells

Answer 10

23

Question 11

Sex cells have 23 chromosomes, compared to __
chromosomes in other body cells

Answer 11

46

Question 12

When sperm and egg unite at fertilization, genetic
information carried on __ chromosomes is restored

Answer 12

46

Question 13

Sex cells are produced by a special type of division called
__________

Answer 13

Meiosis

Question 14

________ consists of 2 successive divisions, the first (meiosis I) and second
(meiosis II) meiotic divisions

Answer 14

Meiosis

Question 15

Meiosis consists of 2 successive divisions, the first (________) and second
(meiosis II) meiotic divisions

Answer 15

Meiosis I

Question 16

Meiosis onsists of 2 successive divisions, the first (meiosis I) and second
(________) meiotic divisions

Answer 16

Meiosis II

Question 17

How many divisions of meiosis are there?

Answer 17

Two

Question 18

Prior to meiosis, each chromosome _________ and contains 2 DNA
strands, called chromatids, connected by a centromere

Answer 18

Replicates

Question 19

Prior to meiosis, each chromosome replicates and contains 2 DNA
strands, called ________, connected by a centromere

Answer 19

Chromatids

Question 20

Meiotic ells are ______, containing 2 sets of chromosomes in 23 pairs

Answer 20

Diploid

Question 21

Meiosis ___ separates homologous (the same, gene for gene) pairs of
chromosomes

Answer 21

I

Question 22

Meiosis I separates homologous (the same, gene for gene) pairs of
chromosomes: they might not be ________, because the gene may have variants

Answer 22

Identical

Question 23

Meiosis I results in _________ cells, which contain 1 set of chromosomes; 23
chromosomes, 1 from each homologous pair

Answer 23

haploid

Question 24

Meiosis __ separates the chromatids

Answer 24

II

Question 25

Meiosis II Results in cells that are still _______, but whose chromosomes now have 1 chromatid

Answer 25

Haploid

Question 26

At end of this stage, each chromatid is considered a chromosome

Answer 26

Meiosis II

Question 27

What are the four phases of Meiosis I?

Answer 27

Prophase I Metaphase I Anaphase I Telophase I

Question 28

Pairing of homologous chromosomes

Answer 28

Synapsis

Question 29

Which phase of meiosis involves synapsis?

Answer 29

Prophase I

Question 30

During which phase of meiosis I do chromosome pairs line up on midline of the spindle?

Answer 30

Metaphase I

Question 31

During which phase of meiosis is alignment random, with respect to maternal or paternal origin?

Answer 31

Metaphase I

Question 32

During which phase of meiosis do homologous chromosome pairs separate, each replicated member migrating to a different pole?

Answer 32

Anaphase I

Question 33

During which phase of meiosis does each daughter cell receive only 1 replicated member of each chromosome pair; which reduces the chromosome number by half?

Answer 33

Anaphase I

Question 34

During which phase of meiosis does each cell divide completely, forming 2 new haploid daughter cells?

Answer 34

Telophase I

Question 35

During which phase of meiosis does each new cell contain 23 individual chromosome with 2 chromatids?

Answer 35

Telophase I

Question 36

Meiosis II begins after Telophase I, and is similar to _______

Answer 36

Mitosis

Question 37

Meiosis II begins after __________, and is similar to mitosis

Answer 37

Telophase I

Question 38

What are the four phases of meiosis II?

Answer 38

Prophase II Metaphase II Anaphase II Telophase II

Question 39

During which phase of meiosis II do chromosomes condense and reappear, still replicated?

Answer 39

Prophase II

Question 40

During which phase of meiosis II do replicated chromosomes attach to spindle fibers along the midline?

Answer 40

Metaphase II

Question 41

During which phase of meiosis II do centromeres separate, and chromatids migrate to opposite poles?

Answer 41

Anaphase II

Question 42

During which phase of meiosis II are chromatids now considered chromosomes?

Answer 42

Anaphase II

Question 43

During which phase of Meiosis II do each of 2 cells produced in Meiosis I divide into 2 daughter cells?

Answer 43

Telophase II

Question 44

Each cell entering meiosis could produce ___ gametes

Answer 44

4

Question 45

The last phase of meiosis ends with each sex cell having __ set of genetic instructions, or __ chromosomes, compare to 2 sets (46 chromosomes) in other cells

Answer 45

1; 23