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Biology-Related Homework Help Cell Biology Topic started by: Anna le on Jul 25, 2023



Title: The circles in the diagram below represent the centromere at which two chromatids are joined ...
Post by: Anna le on Jul 25, 2023
1.  USE PHOTO INCLUDED

Use the following diagram and information to help you answer the next question.

The circles in the diagram below represent the centromere at which two chromatids are joined together.  The red and the blue chromosomes shown are a homologous pair.  The "X" represents the location where a crossover occurs.  

Crossing over is more likely to occur between genes that are relatively far apart than between genes that are relatively close together.  

For the three genes shown, identify the row that shows the position of the alleles after the crossover occurs.

crossing over
 


a.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
AbC
AbC
aBc
aBc

b.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
ABc
abC
aBC

c.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
Abc
aBC
aBC

d.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
AbC
aBc

2.  LOOK AT PHOTO
Determine whether the structure in the life cycle of a moss is haploid or diploid and determine the process used to make the structure.

1 - Haploid
2 - Diploid
A - Mitosis
B - Meiosis
C - Fertilization

Gametophyte
Answer

Answer

Sporophyte
Answer

Answer

Spore
Answer

Answer

Zygote
Answer

Answer

Egg
Answer

Answer

3.
The DNA in a sunbather’s skin cells may mutate after prolonged exposure to the sun. The process that will pass the mutation along to daughter cells is ___(1)___, which is a mutation that will_____(2)_______.

a.
Process (1)
Description (2)
meiosis
be inherited by the children of the sunbather

b.
Process (1)
Description (2)
meiosis
not be inherited by the children of the sunbather

c.
Process (1)
Description (2)
mitosis
not be inherited by the children of the sunbather

d.
Process (1)
Description (2)
mitosis
be inherited by the children of the sunbather



Title: The circles in the diagram below represent the centromere at which two chromatids are joined ...
Post by: bio_man on Jul 25, 2023
Content hidden


Title: The circles in the diagram below represent the centromere at which two chromatids are joined ...
Post by: Anna le on Jul 25, 2023
Use the following diagram and information to help you answer the next question.

The circles in the diagram below represent the centromere at which two chromatids are joined together.  The red and the blue chromosomes shown are a homologous pair.  The "X" represents the location where a crossover occurs. 

Crossing over is more likely to occur between genes that are relatively far apart than between genes that are relatively close together. 

For the three genes shown, identify the row that shows the position of the alleles after the crossover occurs.

crossing over
 



a.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
AbC
AbC
aBc
aBc

b.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
ABc
abC
aBC

c.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
Abc
aBC
aBC

d.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
AbC
aBc
aBC


Title: The circles in the diagram below represent the centromere at which two chromatids are joined ...
Post by: bio_man on Jul 26, 2023
I believe the correct answer is

b.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
ABc
abC
aBC

I'm not entirely certain though. I figure A's will stay the same, and the alleles will switch one at a time.

Does this correlate with your initial guess?