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Pavlova-9 [17]
2 years ago
7

Who gerrymanders? X.X

Biology
1 answer:
9966 [12]2 years ago
5 0

Answer:

American politician Elbridge Gerry, Vice President of the United States at the time of his death, who was Governor of Massachusetts.

Explanation:

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The regulation of body temperature is an example of which type of homeostatic control?
Arturiano [62]
Its our warm bloodlessness we stay at one temp because our blood has to be that warm at all times 
6 0
3 years ago
The CRISPR/Cas9 system can cleave genomic DNA at sequences other than the desired target, a phenomenon referred to as off target
Deffense [45]

Answer:

The minimum length of a sgRNA sequence to avoid off target cleavage by the CRISPR/Cas system in the fly fruit genome is 14 bases

Explanation:

We are trying to use the CRISPR/Cas system to cleavage the genome of the fruit fly (which is 1.4x10^8 bp long). Also we desire the cleavage to be unique. That means we need a target sequence long enough to be able to assume it will only appear once in the genome.

First, we should think that in every position, we can find one out of four different nucleotide (A, C, T, G). So, the probability of getting a sequence of a given length "n" will be (1/4)^n (We are assuming that the probability of finding a nucleotide in the position "i", it's independent of the nucleotide we find in any other position "j").

Also, to know how many times a sequence will appear in a genome (the expected value of occurrence), we must multiply the probability of that sequence to randomly occur by the length of the genome. For our specific example, the number of occurence of a sequence of length "n" is:

nºoccurence=[(1/4)^n]*1.4*10^8

But in this case, what we want is the expected number of times the sequence will appear to be 1, and we want to obtain the length of the target sequence (n).

Given the information above, we know that:

[(1/4)^n]*1.4*10^8 =1

[(1/4)^n]=(1/1.4*10^8)=1.4*10^-8

Then, if we want to calculate n, we can use logarithms and its properties to get:

log[(1/4)^n]=log[1.4*10^-8]

n*log[(1/4)]=log[1.4*10^-8]

n=log[1.4*10^-8]/log[(1/4)] => n=13.29 approximately.

As the sequence needs to have a natural number of elements, <u>we can conclude that using a target sequence of a minimum of 14 bases with the CRISPR/Cas system in the fly fruit genome should be enough to avoid off target cleavage.</u>

3 0
3 years ago
Please don't answer if you arent 100%
VLD [36.1K]

Answer:

Pelagic

Explanation:

The deepest regions of the sea are Hado pelagic

7 0
2 years ago
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How does the structure of a nephron directly relate to function of the kidney
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Nephrons are the filtering structures of the kidneys. The kidneys contain millions and millions of these tiny filtering structures that are responsible for cleaning the blood. Nephrons are responsible for removing excess water, wastes, and other substances in the blood that are not needed by the body. They also return necessary substances (e.g. sodium, potassium, phosphorus) whenever the body runs low in supply.  

If these nephrons are damaged, blood will not be properly filtered. As a result, the kidney will have different diseases and this might lead to kidney and multiple organ failure.       <span> </span>
4 0
3 years ago
How does natural selection explain why some organisms are more likely to survive and reproduce than other organisms?
nikdorinn [45]
The answers is C....
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2 years ago
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