Question 1

Which of the following is NOT associated with meiosis?

Accepted Answer

A)  reduction of the number of chromosomes 
B)  somatic cells 
C)  sexual reproduction 
D)  sperm and egg 
E)  germ cells 
A)  reduction of the number of chromosomes 
B)  somatic cells 
C)  sexual reproduction 
D)  sperm and egg 
E)  germ cells

Question 2

An x-shaped appearance of chromosomes during the process of meiosis provides evidence of

Accepted Answer

A)  irradiation damage. 
B)  crossing over. 
C)  chromosomal aberration. 
D)  fertilization. 
E)  spindle fiber formation. 
A)  irradiation damage. 
B)  crossing over. 
C)  chromosomal aberration. 
D)  fertilization. 
E)  spindle fiber formation.

Question 3

Crossing over

Accepted Answer

A)  increases variability in gametes. 
B)  results in only one exchange per homologue. 
C)  occurs between sister chromatids. 
D)  prevents genetic recombination. 
E)  is followed immediately by separation of each of the chromatids. 
A)  increases variability in gametes. 
B)  results in only one exchange per homologue. 
C)  occurs between sister chromatids. 
D)  prevents genetic recombination. 
E)  is followed immediately by separation of each of the chromatids.

Question 4

Match between columns
                        Premises: How many sperm would eventually be produced from 20 spermatids?
How many ova (eggs) would eventually result from 20 primary oocytes?
How many ova (eggs) would eventually result from 20 secondary oocytes?
How many sperm would eventually be produced from 20 primary spermatocytes?

Accepted Answer

The Answer of 20 . and 20. and 60 and is...

Question 5

Homologous chromosomes

Accepted Answer

A)  may exchange parts during meiosis. 
B)  have alleles for the same characteristics even though the gene expression may not be the same. 
C)  are in pairs that have one chromosome of each pair from the father and one from the mother. 
D)  pair up during meiosis. 
E)  all of these 
A)  may exchange parts during meiosis. 
B)  have alleles for the same characteristics even though the gene expression may not be the same. 
C)  are in pairs that have one chromosome of each pair from the father and one from the mother. 
D)  pair up during meiosis. 
E)  all of these

Question 6

If meiosis did not occur in sexually reproducing organisms,

Accepted Answer

A)  growth of the zygote would be halted. 
B)  mitosis would be sufficient. 
C)  gametes would be haploid. 
D)  the chromosome number would double in each generation. 
E)  eggs would be haploid, but sperm would be diploid. 
A)  growth of the zygote would be halted. 
B)  mitosis would be sufficient. 
C)  gametes would be haploid. 
D)  the chromosome number would double in each generation. 
E)  eggs would be haploid, but sperm would be diploid.

Question 7

Selecting the Exception Four of the five answers listed below are events occurring during mitosis. Select the exception.

Accepted Answer

A)  chromosome replication 
B)  division of centromere 
C)  lining chromosomes up at the cellular equator 
D)  spindle microtubules attach to the centromeres 
E)  chromosomes migrate to opposite ends of the cell 
A)  chromosome replication 
B)  division of centromere 
C)  lining chromosomes up at the cellular equator 
D)  spindle microtubules attach to the centromeres 
E)  chromosomes migrate to opposite ends of the cell

Question 8

Match between columns
                        Premises: Recombination via crossing over occurs during this stage.
New genetic combinations ¾ upon which natural selection can act ¾ are present after this stage.
The formation of groups of four chromatids occurs during this stage.
During this phase, the centromeres separate.
By the end of this phase, the number of homologous chromosomes is reduced in half.
Chiasmata (points for crossing over) are present during this stage.
During this stage, the sister chromatids separate.
Following this phase, each individual cell is haploid.

Accepted Answer

The Answer of anaphase II. and telophase I and prophase is...

Question 9

Selecting the Exception Four of the five answers listed below assist in chromosome movement. Select the exception.

Accepted Answer

A)  microtubule 
B)  spindle microtubules 
C)  centromeres 
D)  centriole 
E)  nuclear envelope 
A)  microtubule 
B)  spindle microtubules 
C)  centromeres 
D)  centriole 
E)  nuclear envelope

Question 10

Chromosomes are duplicated during which period?

Accepted Answer

A)  M 
B)  D 
C)  G1 
D)  G2 
E)  S 
A)  M 
B)  D 
C)  G1 
D)  G2 
E)  S

Question 11

Anaphase

Accepted Answer

A)  involves the lining up of the chromosomes across the equatorial plate. 
B)  is the same in mitosis and meiosis I and II. 
C)  is initiated when the newly divided centromeres begin to move apart. 
D)  results in an unequal distribution of chromosomes to the resulting cells. 
E)  does not occur in meiosis II. 
A)  involves the lining up of the chromosomes across the equatorial plate. 
B)  is the same in mitosis and meiosis I and II. 
C)  is initiated when the newly divided centromeres begin to move apart. 
D)  results in an unequal distribution of chromosomes to the resulting cells. 
E)  does not occur in meiosis II.

Question 12

Chromosome pair number 23 is classified as

Accepted Answer

A)  centrosomes. 
B)  somatosomes. 
C)  sex chromosomes. 
D)  autosomes. 
E)  corposomes. 
A)  centrosomes. 
B)  somatosomes. 
C)  sex chromosomes. 
D)  autosomes. 
E)  corposomes.

Question 13

At the end of which phase are the chromosomes condensed?

Accepted Answer

A)  anaphase. 
B)  metaphase. 
C)  interphase. 
D)  prophase. 
E)  telophase. 
A)  anaphase. 
B)  metaphase. 
C)  interphase. 
D)  prophase. 
E)  telophase.

Question 14

Selecting the Exception Four of the five answers listed below are periods of the same cycle. Select the exception.

Accepted Answer

A)  G1 
B)  M 
C)  R 
D)  S 
E)  G2 
A)  G1 
B)  M 
C)  R 
D)  S 
E)  G2

Question 15

Copies of chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

Accepted Answer

A)  mother 
B)  daughter 
C)  sister 
D)  homologous 
E)  analogous 
A)  mother 
B)  daughter 
C)  sister 
D)  homologous 
E)  analogous

Question 16

The division of the plasma membrane of the cell begins with a

Accepted Answer

A)  cleavage furrow. 
B)  membranous appendage. 
C)  membrane pocket. 
D)  cleavage ridge. 
E)  membrane hillock. 
A)  cleavage furrow. 
B)  membranous appendage. 
C)  membrane pocket. 
D)  cleavage ridge. 
E)  membrane hillock.

Question 17

Red blood cells are formed at a rate of

Accepted Answer

A)  2 - 3 million per second. 
B)  2 - 3 million per minute. 
C)  2 - 3 million per hour. 
D)  10 million per day. 
E)  50 million per hour. 
A)  2 - 3 million per second. 
B)  2 - 3 million per minute. 
C)  2 - 3 million per hour. 
D)  10 million per day. 
E)  50 million per hour.

Question 18

When a cell undergoes mitosis,

Accepted Answer

A)  the daughter cells have identical genes. 
B)  the daughter cells have genes identical to those of the "parent" cell that produced it. 
C)  the amount of cytoplasm in the "parent" cell and in each daughter cell is equal. 
D)  there is an exact duplication and division of all of the organelles between daughter cells. 
E)  the daughter cells have identical genes, and these genes are identical to those of the "parent" cells that produced them. 
A)  the daughter cells have identical genes. 
B)  the daughter cells have genes identical to those of the "parent" cell that produced it. 
C)  the amount of cytoplasm in the "parent" cell and in each daughter cell is equal. 
D)  there is an exact duplication and division of all of the organelles between daughter cells. 
E)  the daughter cells have identical genes, and these genes are identical to those of the "parent" cells that produced them.

Question 19

Pairing of homologues and crossing over occur during

Accepted Answer

A)  anaphase I. 
B)  metaphase II. 
C)  prophase I. 
D)  prophase II. 
E)  telophase II. 
A)  anaphase I. 
B)  metaphase II. 
C)  prophase I. 
D)  prophase II. 
E)  telophase II.

Question 20

Paired homologous chromosomes are found at the spindle equator during

Accepted Answer

A)  metaphase I. 
B)  telophase I. 
C)  prophase II. 
D)  metaphase II. 
E)  anaphase II. 
A)  metaphase I. 
B)  telophase I. 
C)  prophase II. 
D)  metaphase II. 
E)  anaphase II.

Exam 18: Cell Reproduction

Which of the following is NOT associated with meiosis?

An x-shaped appearance of chromosomes during the process of meiosis provides evidence of

Crossing over

Homologous chromosomes

If meiosis did not occur in sexually reproducing organisms,

Selecting the Exception Four of the five answers listed below are events occurring during mitosis. Select the exception.

Selecting the Exception Four of the five answers listed below assist in chromosome movement. Select the exception.

Chromosomes are duplicated during which period?

Anaphase

Chromosome pair number 23 is classified as

At the end of which phase are the chromosomes condensed?

Selecting the Exception Four of the five answers listed below are periods of the same cycle. Select the exception.

Copies of chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

The division of the plasma membrane of the cell begins with a

Red blood cells are formed at a rate of

When a cell undergoes mitosis,

Pairing of homologues and crossing over occur during

Paired homologous chromosomes are found at the spindle equator during

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