Question 1

Most cultivated bananas are triploid.How could these be generated from diploid parent banana plants?

Accepted Answer

A)  Non-disjunction in meiosis followed by normal fertilization
B)  Non-disjunction in mitosis followed by normal fertilization
C)  Fertilization of a haploid egg by two haploid sperm
D)  Fertilization of a haploid egg by a haploid sperm
E)  Fertilization of a diploid somatic cell by a haploid spermF) C) and D)
G) B) and D)

Question 2

Diploid means having:

Accepted Answer

A)  One complete set of chromosomes
B)  Three complete sets of chromosomes
C)  Two complete sets of chromosomes
D)  Two chromosomes in each somatic cell
E)  Two chromosomes in each gameteF) A) and C)
G) A) and B)

Question 3

If daughter cells produced by meiosis have a mixture of paternal and maternal chromosomes this is due to:

Accepted Answer

A)  Crossing over
B)  Semi-conservative replication
C)  Random fertilization
D)  Random alignment of chromosome pairs
E)  MutationF) B) and D)
G) C) and E)

Question 4

Homologous chromosomes contain the same ____ but may contain different ____.

Accepted Answer

A)  Alleles, genes
B)  Sister chromatids, genes
C)  Alleles, sister chromatids
D)  Genes, sister chromatids
E)  Genes, allelesF) B) and D)
G) B) and E)

Question 5

Figure 9.19 
-Tragopogon mirus is a hybrid of T.dubius and T porrifolius.Based on Figure 9.19,T.mirus has:

Accepted Answer

A)  12 chromosomes from T. d ubius and 12 chromosomes from T porrifolius
B)  6 chromosomes from T. dubius and 6 chromosomes from T porrifolius
C)  24 chromosomes from T. dubius and 24 chromosomes from T porrifolius
D)  24 chromosomes from T. dubius
E)  24 chromosomes from T porrifoliusF) C) and E)
G) B) and E)

Question 6

Mitotic cell division creates identical copies by replicating a cell's DNA __________ and then dividing ____________.

Accepted Answer

A)  Once, twice
B)  Twice, once
C)  Twice, twice
D)  Once, once
E)  None are correctF) None of the above
G) A) and C)

Question 7

If a diploid sperm fertilizes a diploid egg it will produce a ____ zygote.

Accepted Answer

A)  Triploid
B)  Tetraploid
C)  Diploid
D)  Haploid
E)  HexaploidF) B) and C)
G) B) and D)

Question 8

In humans during meiosis,a diploid germ cell reduces its chromosome number by half to generate __________ haploid nuclei.

Accepted Answer

A)  2
B)  3
C)  4
D)  23
E)  46F) All of the above
G) A) and D)

Question 9

Why are tetraploid offspring considered a separate species from their diploid parents?

Accepted Answer

A)  Their offspring would be diploid and sterile
B)  Their offspring would be triploid and sterile
C)  Their offspring would be tetraploid and sterile
D)  The two species would look different and would not be pollinated
E)  The two species would be in different habitats and not able to mateF) A) and C)
G) B) and D)

Question 10

In humans,the egg provides the mitochondria to the zygote.In plants which organelles would be provided by the egg and not by the sperm?

Accepted Answer

A)  Mitochondria
B)  Chloroplasts
C)  Nuclei
D)  Chloroplasts and mitochondria
E)  Nuclei and chloroplastsF) B) and C)
G) A) and B)

Question 11

A diploid cell with 6 chromosomes would produce which of the following after meiosis?

Accepted Answer

A)  Four genetically distinct types of haploid gametes
B)  Two genetically distinct types of diploid gametes
C)  Four genetically distinct types of diploid gametes
D)  Eight genetically distinct types of haploid gametes
E)  Eight genetically identical haploid gametesF) A) and C)
G) B) and E)

Question 12

A species has 6 chromosomes in each diploid cell.How many genetically unique offspring could be produced from sexual reproduction in this species?

Accepted Answer

A)  64
B)  36
C)  16
D)  9
E)  8F) None of the above
G) C) and D)

Question 13

Human cell's have:

Accepted Answer

A)  23 pairs of chromosomes
B)  22 pairs of chromosomes
C)  44 chromosomes
D)  2 pairs of sex chromosomes
E)  One pair of autosomesF) A) and E)
G) A) and B)

Question 14

Mitosis occurs in germ cells throughout life.

Accepted Answer

A) True 
 B)False

Question 15

If a haploid cell goes through meiosis it will generate:

Accepted Answer

A)  Four haploid cells
B)  This isn't possible
C)  Two haploid cells
D)  Four diploid cells
E)  Two diploid cellsF) A) and E)
G) All of the above

Question 16

Why is it essential that meiosis produce haploid cells?

Accepted Answer

A)  So that the number of chromosomes will double each generation
B)  To produce haploid offspring
C)  To prevent the number of chromosomes from doubling each generation
D)  To produce diploid gametes
E)  To allow asexual reproductionF) A) and E)
G) C) and D)

Question 17

The process that merges the gametes from two parents is:

Accepted Answer

A)  Fertilization
B)  Meiosis
C)  Parthenogenesis
D)  Mitosis
E)  ConjugationF) All of the above
G) A) and C)

Question 18

A diploid cell with 4 chromosomes would produce which of the following after meiosis?

Accepted Answer

A)  Two genetically distinct types of haploid gametes
B)  Two genetically distinct types of diploid gametes
C)  Four genetically distinct types of haploid gametes
D)  Four genetically distinct types of diploid gametes
E)  Four genetically identical diploid gametesF) A) and C)
G) A) and E)

Question 19

If a woman in her late forties wants to have a baby and seeks medical advice,she would most likely be advised that she is at much greater risk of having a baby with Down syndrome.

Accepted Answer

A) True 
 B)False

Question 20

In plants,sporophytes undergo meiosis to produce ____ spores.

Accepted Answer

A)  Diploid
B)  Tetraploid
C)  Triploid
D)  Fertilized
E)  HaploidF) A) and C)
G) A) and B)

Exam 9: Sexual Reproduction and Meiosis

A diploid cell with 4 chromosomes would produce which of the following after meiosis?

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Homologous chromosomes contain the same ____ but may contain different ____.

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Why are tetraploid offspring considered a separate species from their diploid parents?

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If daughter cells produced by meiosis have a mixture of paternal and maternal chromosomes this is due to:

Correct AnswerverifiedShow Answer

A species has 6 chromosomes in each diploid cell.How many genetically unique offspring could be produced from sexual reproduction in this species?

Correct AnswerverifiedShow Answer

A diploid cell with 6 chromosomes would produce which of the following after meiosis?

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In humans,the egg provides the mitochondria to the zygote.In plants which organelles would be provided by the egg and not by the sperm?

Correct AnswerverifiedShow Answer

If a haploid cell goes through meiosis it will generate:

Correct AnswerverifiedShow Answer

Diploid means having:

Correct AnswerverifiedShow Answer

Mitotic cell division creates identical copies by replicating a cell's DNA __________ and then dividing ____________.

Correct AnswerverifiedShow Answer

The process that merges the gametes from two parents is:

Correct AnswerverifiedShow Answer

If a woman in her late forties wants to have a baby and seeks medical advice,she would most likely be advised that she is at much greater risk of having a baby with Down syndrome.

Correct AnswerverifiedShow Answer

Figure 9.19 -Tragopogon mirus is a hybrid of T.dubius and T porrifolius.Based on Figure 9.19,T.mirus has:

Correct AnswerverifiedShow Answer

Why is it essential that meiosis produce haploid cells?

Correct AnswerverifiedShow Answer

In plants,sporophytes undergo meiosis to produce ____ spores.

Correct AnswerverifiedShow Answer

Mitosis occurs in germ cells throughout life.

Correct AnswerverifiedShow Answer

In humans during meiosis,a diploid germ cell reduces its chromosome number by half to generate __________ haploid nuclei.

Correct AnswerverifiedShow Answer

Most cultivated bananas are triploid.How could these be generated from diploid parent banana plants?

Correct AnswerverifiedShow Answer

If a diploid sperm fertilizes a diploid egg it will produce a ____ zygote.

Correct AnswerverifiedShow Answer

Human cell's have:

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Homologous chromosomes contain the same but may contain different .

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Mitotic cell division creates identical copies by replicating a cell's DNA and then dividing __.

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