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guapka [62]
3 years ago
5

Pleaseee heelllppppp

Biology
2 answers:
ivann1987 [24]3 years ago
8 0

<em>ANSWER:</em>

B. Physical separation of populations prevents interbreeding and mixing of gene pools.





Kruka [31]3 years ago
3 0
I think it is D. I a. sorry if wrong
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This problem has been solved!
larisa [96]

Answer:

The smallest size tube that will hold the entire reaction is 0.5ml

Explanation:

25ul (DNA sample) + 25ul (enzyme) + 50ul (buffer) + 400ul (water) = 500ul total

since 1000ul=1ml, then 500ul = 0.5ml

Answer:

The device that mostlikely would not be used P20

Explanation:

P20 is a pipette used to measure and sample volumes of 20ul maximum.

Answer:

The reaction mix will have 400 units of the enzyme.

The working dilution will be 0.8 Units/ul.

Explanation:

The mix has 20ul of the enzyme which is 20Units/ul. Then we have 20ulx20Units/ul= 400 Units of enzyme in the mix.

Since the final volume is 500ul, the final concentration 400Units/500ul=0.8 Units/ul.

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4 years ago
List two factors that the rate of photosynthesis
irakobra [83]
Light intensity, temperature, and carbon dioxide 
4 0
3 years ago
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Plants can reproduce...
stealth61 [152]

Answer:

C sexually and asexually

Explanation:

plants are living organisms. That means they need to reproduce in order to pass on their genes to future generations. Plants can create offspring through either sexual or asexual reproduction.

6 0
3 years ago
Which is TRUE for the cells that are formed by the end of Meiosis II?
nikitadnepr [17]

Answer:

The correct answer is B 4 cells are formed,each having half the number of chromosomes as the original cell.

Explanation:

Meiosis is a specific type of cell division that occur in the germ cells.Meiosis is called reductional division because the 4 new cells those are produced after second meiotic division contain half the number of chromosomes as that of original cells.

   During meiosis a cell undergo division two times the division that occur during first time is called first meiotic division resulting in the formation of 2 cells having 2n number of chromosomes.On the other hand the second meiotic division form 4 cells each having half the number of chromosomes.

3 0
4 years ago
Henry is adopted.He has her on the back of his hand, but both of his parents have had no hair on the back of your hand?
umka21 [38]

Answer:

Is adopted

Explanation:

5 0
3 years ago
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