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stepladder [879]
3 years ago
8

How much oxygen is contained in the atmosphere?

Biology
1 answer:
Blizzard [7]3 years ago
8 0
The atmosphere is composed of many different gases. Oxygen is 20.95% contained in the atmosphere.
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The gene for petal color in a flower has incomplete dominance, so that individuals with two A1 alleles (A1A1) are black, individ
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Answer:

The probability of getting a mottled offspring is 0%. There is no A2 allele involved in the cross.

Explanation:

<u>Available data</u>:

  • The gene for petal color in a flower has incomplete dominance
  • Two A1 alleles (A1A1) express black color
  • Two A2 alleles (A2A2) express white color
  • One of each allele (A1A2) express mottled color

In a cross between two black flowers, there is no allele A2, there are just two alleles A1. So, the cross is:

Parental)    A1A1    x    A1A1

Gametes)  A1   A1       A1   A1

Punnet Square)     A1         A1

                   A1    A1A1     A1A1

                   A1     A1A1     A1A1

F1 Phenotypes: 100% black flowers

F1 Genotype: 100% A1A1

There are 0% of probabilities of getting a mottled offspring.

7 0
3 years ago
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Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an
ElenaW [278]
The answer to this question is : <span>Plantae</span>
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3 years ago
Cell membranes are made up partly of fats.What type of macromolecules are fats?
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The answer is....... (drumroll)........ lipids!

6 0
4 years ago
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1)The cell theory includes all of these concepts exceptA)all cells come from the division of preexisting cells.B)each cell maint
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Answer:

They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.

Explanation:

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3 years ago
What will happen to a red blood cell (RBC), which has an internal ion concentration of about 0.9 percent, if it is placed into a
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Answer:

It wil swell and burst

Explanation:

"pure" water is only H2O so there are no solutes, because of osmosis, water will enter the red blood cell that does contain solutes until the cell and the surrounding environment (in this case the water) are iso-osmotic, this will never happen though because the water contains no solutes.

3 0
3 years ago
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