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Lesechka [4]
2 years ago
7

I need help please

Biology
2 answers:
elena-14-01-66 [18.8K]2 years ago
7 0

Answer:

B) A volcanic lava flow cools and hardens on the surface.

Explanation:

11Alexandr11 [23.1K]2 years ago
3 0

Answer:

Explanation:

D i think because subducing forms metamorphic rock(subduction is where two convergent plate boundries run into each other bringing down rock into the inside of the earth). Check the comments to see if im right

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Prophase plays a vital role during the process of meiosis.
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C AND E?

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Which predator is typically found in Central Africa (but occasionally at geocode 34.043021, -118.2668356) and slays its opponent
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The answer is a black mamba.

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Genes A and B are 10 map units apart and genes B and C are 20 map units apart, with gene B located between genes A and C. What w
Marizza181 [45]

Answer:

2% of the progeny will be double crossovers for the trihybrid test cross

Explanation:  

By knowing the positions of genes, we can estimate the distances in MU between them per region.

  • Genes A and B are 10 map units apart (Region I)
  • Genes B and C are 20 map units apart (Region II)
  • Genes A and C are 30 map units apart

----A-------10MU--------B-------------20MU-------------C---

             Region I                      Region II  

We can estimate the recombination frequencies by dividing each distance by 100.

• recombination frequency of A-B region = 10MU / 100 = 0.10

• recombination frequency of B-C region = 20MU / 100 = 0.20

Now that we know the recombination frequencies in each region, we can calculate the expected double recombinant frequency, EDRF, like this:

EDRF = recombination frequency in region I x recombination frequency in region II.

EDRF = 0.10 x 0.20 = 0.02        

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