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Varvara68 [4.7K]
3 years ago
11

How to invasive plants effect negatively and how does removing them effect is positively

Biology
1 answer:
Anna [14]3 years ago
3 0

Answer:

Invasive plant species have an impact on the diversity of local species, they affect water availability and damage the quality of soil nutrients. Once an alien plant has invaded a habitat, it changes the conditions of that environment. It does so by changing the light, solar radiation and temperature levels in the invaded patches. The quality and availability of food, shelter, nest sites, basking sites and perches are changed for a number of animals.In a few cases, some benefits of alien plants have been reported. For example, they can provide fire wood for local communities or add resources for animal species. But these benefits typically do not surpass the negative effects.

Explanation:

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C

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All of them should be checked

Explanation:

If you make a punnet square you will have F and f lining the top and sides. The inside boxes will be FF, Ff, Ff, and ff. FF and Ff are long fins and ff is short fins so both are possible. Hope that helps good luck.

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Why is it beneficial for a leech to be able to store blood for months and release it slowly?
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The reasons are:
- the blood is very low on nutrition
- the leech is not feeding itself regularly

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Which of these is NOT an example of biting and chewing insect?
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8 0
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Restriction enzymes are used in making recombinant DNA. Describe the role restriction enzymes perform when constructing recombin
Andrei [34K]

Hi,

Recombinant DNA technology is the process in which a target gene  of interest is replicated by inserting it into a vector and creating a recombinant DNA. This recombinant DNA is then returned into an expression system where it is replicated several times to give rise to multiple copies of our desired gene or that gene product.

One of the very important role for the execution of this technology is performed by Restriction endonuclease enzymes. These are the enzymes that have ability to cut the DNA fragment at specific sequence into fragments of different lengths called restriction fragments.

  • They play a very important role in recombinant DNA technology:
  • They can map the location of specific restriction sites where the target sequence is identified and cleaved.
  • They cut down the DNA at specific sites called restriction sites. The host DNA in which foreign gene or target gene is inserted is also cut with the same restriction enzymes. So in the recombinant DNA technology, restriction enzymes act like a molecular scissor which identify and cut certain DNA sequences as per or requirement.
  • The target sequence can be cut from multiple places by restriction enzymes since our target sequence can be present multiple times in the DNA of organism.
  • When restriction enzymes cut the DNA, they leave sticky or blunt ends at that site in such a way that these ends are able to bind with the complementary bases of vector DNA when introduced.
  • Then another enzyme DNA ligase seals the ends of target DNA and vector DNA making a whole recombinant DNA that is ready to be cloned and progress further steps of recombinant DNA technology.

<em>You can see attached image for better understanding.</em>

Hope it help!


6 0
3 years ago
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