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New Topic  
Anonymous bunnyliv
wrote...
A month ago
please help me figure out these questions!!

The diagram to the right shows a haploid gamete that resulted from meiosis of a diploid cell. Stripes denote chromosomes inherited maternally, solid represents paternal chromosomes. The shapes represent different chromosomes. If you assume no crossing-over, which diagram below represents the diploid cell?   (see image below)

What one event in meiosis makes it possible for chromosomes in gametes to have NEW combinations of genes?
Question options:

1)

cytoplasmic division during telophase II

2)

crossing-over during synapsis

3)

formation of the spindle in prophase I

4)

lining up of homologous chromosomes during metaphase I


Use the following diagram to answer questions 15-21 (see image below please)


The correct sequence of stages for the portion of the process shown above is.
Question  options:

1)

1-3-2-4

2)

3-4-1-2

3)

3-1-4-2

4)

2-3-1-4


Use the diagram in question 15 to answer the following question.

The number of chromosomes in a gamete produced by this cell is
Question options:

1)

3

2)

24

3)

6

4)

12


Use the diagram in question 15 to answer the following question.

The first polar body is seen in stage.
Question options:

1)

1

2)

2

3)

3

4)

4



Use the diagram in question 15 to answer the following question.

Synapsis is first seen in stage
Question  options:

1)

4

2)

1

3)

3

4)

2



Use the diagram in question 15 to answer the following question.

Tetrads are first visible in stage
Question  options:

1)

2

2)

1

3)

4

4)

3



Use the diagram in question 15 to answer the following question.

The number of homologous pairs of chromosomes is
Question  options:

1)

3

2)

12

3)

24

4)

6



Use the diagram in question 15 to answer the following question.

What phase would first indicate that nondisjunction had occured?
Question  options:

1)

2

2)

1

3)

4

4)

3



 
Certain cells have twice as much DNA as other normal cells of the same organism. This is true of
Question  options:

1)

a newly formed sperm cell.

2)

cells that are in an early stage of mitosis

3)

cells that show a decrease in activity of the ribosomes.

4)

an egg cell immediately before fertilization.
2
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3 Replies
Replies
wrote...
Educator
A month ago Edited: A month ago, bio_man
Quote
The diagram to the right shows a haploid gamete that resulted from meiosis of a diploid cell. Stripes denote chromosomes inherited maternally, solid represents paternal chromosomes. The shapes represent different chromosomes. If you assume no crossing-over, which diagram below represents the diploid cell?   (see image below)

Option 2

Quote
What one event in meiosis makes it possible for chromosomes in gametes to have NEW combinations of genes?
Question options:

1)

cytoplasmic division during telophase II

2)

crossing-over during synapsis

3)

formation of the spindle in prophase I

4)

lining up of homologous chromosomes during metaphase I

crossing-over during synapsis

I can't answer the rest because the picture isn't clear enough.
bunnyliv Author
wrote...
A month ago
Hi, sorry here’s a clearer picture.
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Answer accepted by topic starter
bio_manbio_man
wrote...
Educator
Top Poster
Posts: 32121
A month ago
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Here's what I think is going on.



Quote
The number of chromosomes in a gamete produced by this cell is
Question options:

1)

3

2)

24

3)

6

4)

12

Because at the end of meiosis 1 we have what appears are two primary polar bodies of six chromosomes, then our gamete will be half that.

Quote
The correct sequence of stages for the portion of the process shown above is.
Question  options:

1)

1-3-2-4

2)

3-4-1-2

3)

3-1-4-2


4)

2-3-1-4

Quote
The first polar body is seen in stage.
Question options:

1)

1

2)

2


3)

3

4)

4

Use the diagram in question 15 to answer the following question.

Synapsis is first seen in stage
Question  options:

1)

4

2)

1


3)

3

4)

2

Use the diagram in question 15 to answer the following question.

Tetrads are first visible in stage
Question  options:

1)

2

2)

1

3)

4

4)

3




Use the diagram in question 15 to answer the following question.

The number of homologous pairs of chromosomes is
Question  options:

1)

3


2)

12

3)

24

4)

6

Use the diagram in question 15 to answer the following question.

What phase would first indicate that nondisjunction had occured?
Question  options:

1)

2

2)

1

3)

4


4)

3



 
Certain cells have twice as much DNA as other normal cells of the same organism. This is true of
Question  options:

1)

a newly formed sperm cell.

2)

cells that are in an early stage of mitosis


3)

cells that show a decrease in activity of the ribosomes.

4)

an egg cell immediately before fertilization.
2
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