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Damm [24]
3 years ago
10

Select all that apply.

Biology
2 answers:
vitfil [10]3 years ago
7 0
Nitrogen is not necessary <span />
finlep [7]3 years ago
5 0

Its Nitrogen and Nutrients.

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within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of m
anzhelika [568]

Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. <em>The stage that most contributes to </em><em>diversity</em><em> is stage C, </em>where you can see chromosomes after crossing-over.

----------------------------  

There are different mechanisms involved in producing genetic variation among descendants. These are,

  • Crossing-over between homologous chromosomes (prophase 1),
  • Random lining of homologous chromosomes (metaphase 1),
  • Random fertilization  

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.

The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.

After crossing over, homologous chromosomes get separated again.  

In the attached imaged there are four different stages of meiosis.

Stage C is the one that contributes the most to diversity.

We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.

<em>In the image you will see the difference between </em><em>chromosomes</em><em> that has gone through the</em><em> crossing over </em><em>mechanism, and </em><em>chromosomes</em><em> that has not. The difference in color represents segments interchange and variation.</em>

<em />

-----------------------------------

You can learn more about crossing over at

brainly.com/question/12911831?referrer=searchResults

brainly.com/question/394891?referrer=searchResults

6 0
2 years ago
“What is the total magnification of a sample with an ocular lens power of 15X and using a 40X objective lens?”
Norma-Jean [14]

Answer:

Magnification power is 600X

Explanation:

15X and 40X indicating that the object is enlarged 15 times and 40 times. Formula is X = lens power X objective lens power.

Extra - Fun fact - The magnifying glass consists of a piece of convex-shaped glass or plastic.

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Explanation:

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Explanation:

Салам алейкум

8 0
2 years ago
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