What is the best description of chromosomes by the end of metaphase II of meiosis

Biology

2 answers:

kotykmax [81]3 years ago

5 0

Lines up in the middle of the cell

tatuchka [14]3 years ago

3 0

Lines p in the middle of the cell hope this helps

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How dose science influence the decisions made about social, economic, and political issues?

inysia [295]

This is a rather subjective question and has a lot to do with the type of society in which one lives. the more secular the world is becoming... gives science a huge spotlight on the stage. because science provides an answer with tons of evidence to back it up, it is seen as a reliable method to follow. So, socially speaking you may have experienced in a normal conversation where someone turns around and tells you that your opinions are just opinions and have nothing factual to back them up. This is where science comes in. Economically and politically speaking, science is used to justify different political aims of governments. However, this is done mostly through the misrepresentation of science by people who are trying to pursue their own agenda. So really this question can be answered in many ways and from many different perspectives but do not forget that science influences all streams for the better but also for the worse in the way in which it is represented.

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During which phase change does the arrangement of water molecules become the least orderly? A. melting B. condensing C. freezing

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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!

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