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Reika [66]
2 years ago
11

PLEASE ANSWER ASAP!!!

Biology
1 answer:
Lynna [10]2 years ago
6 0

Answer: Competition is an interaction between organisms or species in which both the organisms or species are harmed. Limited supply of at least one resource used by both can be a factor. This example is if two lions get into a fight and they end up hurting each other.

Exploitation competition occurs when individuals interact indirectly as they compete for common resources, like territory, prey or food. An example of this is when people are farming and they are trying to get the best food available but someone else might have already gotten it.

Commensalism is a positive type of ecological interaction between two species in an ecosystem. In commensalism, the association occurs between members of two different species where one species is benefited the other is neither benefited nor harmed. An example of this is tree frogs who use trees as protection.

Explanation:

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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 ANSWER QUICKKK, ILL MARK BRAINLIEST
NikAS [45]

Answer:

1. Meanders

2. Flood plain zone

3. Alluvial fan

4. source zone

5. transition zone

6. Deltas

7 0
3 years ago
What do economists call the inverse relationship between price and quantity demanded?
Luden [163]

Law of demand

The regulation of demand  for states that because the rate of a great decrease, the amount demanded of that correct increases.

<h3>What are the five Determinants of Demand?</h3>

The five determinants of demand are:

  • The rate of the goods or service.
  • The earnings of consumers.
  • The expenses of associated items or services—both complementary and acquired together with a selected item, or substitutes sold rather than a product.
  • The tastes or alternatives of customers will pressure demand.
  • Consumer expectancies about whether or not charges for the product will upward push or fall withinside the future.

For combination demand , the wide variety of customers withinside the marketplace is the 6th determinant.

To know more about law of demand, visit:

brainly.com/question/17142751

#SPJ4

7 0
1 year ago
(31) The rough endoplasmic reticulum (A) has ribosomes bound to it (B) is part of the membrane system found throughout the cell'
worty [1.4K]

Answer:

(D) all of the above

Explanation:

The rough endoplasmic reticulum is part of the endoplasmic reticulum, the other one is known as the smoother endoplasmic reticulum.

1. This rough endoplasmic reticulum is considered rough because it has ribosomes bound to it.

2. Also, it is part of the membrane system found throughout the cell's cytoplasm, even though its density is considered to be higher in some places, such as near the nucleus.

3. It is also is connected to the nuclear envelope or membrane

Some of its functions include

1. It produces antibody in certain leukocytes

2. It produces insulin in pancreatic cells

Hence, in this case, the correct answer is Option D "all of the above."

4 0
2 years ago
How does the temperature level in the pond affect the health of the fish?
Harlamova29_29 [7]
Water temperature influences the onset of fish spawn, aquatic vegetation growth and the biological demand for oxygen in ponds. Temperature increases it holds less oxygen. Also water stratification.
7 0
3 years ago
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