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zvonat [6]
3 years ago
14

Which geologic principle explains why the bottom stratum in a section of rock is the oldest?

Biology
1 answer:
weeeeeb [17]3 years ago
5 0
<span>superposition.. its literally word for word "secondary layers are placed on top of the first layers which are on the bottom"</span>
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Random changes in allele frequency in a population are called:
kogti [31]
Random changes in allele frequency in a population are usually called genetic drift. The reason why this is the answer is because it is a very specific word which is used to describe exactly that - random changes in allele frequency. 

All the other cases; answers, here aren't correct and don't apply. 
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A bacterium is infected with an experimentally constructed bacteriophage
dem82 [27]

The complete question is:

a bacterium is infected with an experimentally constructed bacteriophage composed of the T2 phage protein coat and T4 phage DNA. The new phages produced would have

A) T2 protein and T4 DNA

B) T2 protein and T2 DNA

C) a mixture of DNA and proteins of both phages.

D) T4 protein and T4 DNA

E) T4 protein and T2 DNA

A bacterium infected with an experimentally constructed bacteriophage will give new phages with the virus' DNA and the type of proteins that this DNA encodes.

A bacteriophage is a virus that attaches itself to a bacteria and uses it to replicate itself. Viruses have two main parts, a protein coat and their DNA inside it.

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  • As a result, the new phages will have T4 DNA, and the proteins that the virus synthesizes will be the same type as the DNA.

In conclusion, The new phages produced would have D) T4 protein and T4 DNA.

Learn more at:

brainly.com/question/3901247

8 0
2 years ago
Can you help me please
Tcecarenko [31]
From top to bottom, I believe the answers are:
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7 0
3 years ago
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Svetradugi [14.3K]

Answer: Option A, B and D are correct.

Explanation:

ATP or adenosine triphosphate can be defined as the high energy molecules that is used by all the living organism.

This molecule is released by the combustion of carbohydrates in the presence of oxygen.

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7 0
3 years ago
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Answer:

You can determine something is living by classifying it if it has the seven characteristic of life

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