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nata0808 [166]
3 years ago
5

How is PCR used in DNA profiling?

Medicine
2 answers:
lbvjy [14]3 years ago
5 0

Answer:

Polymerase chain reaction, or PCR, is a technique to make many copies of a specific DNA region in vitro (in a test tube rather than an organism).

PCR relies on a thermostable DNA polymerase, Taq polymerase, and requires DNA primers designed specifically for the DNA region of interest.

In PCR, the reaction is repeatedly cycled through a series of temperature changes, which allow many copies of the target region to be produced.

PCR has many research and practical applications. It is routinely used in DNA cloning, medical diagnostics, and forensic analysis of DNA.

PCR:

Polymerase chain reaction (PCR) is a common laboratory technique used to make many copies (millions or billions!) of a particular region of DNA. This DNA region can be anything the experimenter is interested in. For example, it might be a gene whose function a researcher wants to understand, or a genetic marker used by forensic scientists to match crime scene DNA with suspects.

Typically, the goal of PCR is to make enough of the target DNA region that it can be analyzed or used in some other way. For instance, DNA amplified by PCR may be sent for sequencing, visualized by gel electrophoresis, or cloned into a plasmid for further experiments.

PCR is used in many areas of biology and medicine, including molecular biology research, medical diagnostics, and even some branches of ecology.

vladimir2022 [97]3 years ago
4 0
DNA profiling does not use restriction enzymes to cut the DNA. Instead it uses the polymerase chain reaction (PCR) to produce many copies of specific STR sequences. PCR is an automated procedure that generates lots of copies of a specific sequence of DNA
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Answer: B) The number of electron in its valence shell.

Explanation:

Outermost electrons of the atoms which can participate in the chemical bond formation is known as valence electrons.  

Atoms either transfer or share its valence electrons during chemical bond formation. Atoms transfer or share electrons to attain octet or in other words stability.

Generally, 8 electrons are required in their outermost shell or valence shell in order to attain stability. This rule is known as octet rule.

For example, general electronic configuration of sodium belonging to group 1 is  1s2 2s2 2p6 3s1.

No. of valence electrons in Na = 1

by loosing 1 electron, its outer shell electronic configuration become =  1s2 2s2 2p6 (Octet)

Hence, sodium and other group 1 elements are very reactive.

Similarly, halogens (ns2 np5) by gaining 1 electron attain octet (ns2 np6). Hence halogens are also very reactive.

Carbon atom belonging to group 14 has 4 valence electrons (ns2 np2) and share all 4 valence electrons to attain octet and hence reactive.

Nobel gases have octet in their outermost shell (ns2 np6), hence they are most nonreactive element.

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3 years ago
The inability to recognize the faces of familiar people associated with damage to the fusiform gyrus is called ___.
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The inability to recognize the faces of familiar people associated with damage to the fusiform gyrus is called<u> Prosopagnosia.</u>

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The fusiform gyrus, additionally known as the occipitotemporal gyrus, is a shape spanning the basal floor of the temporal and occipital lobes1. it's far the largest issue of the human ventral temporal cortex, a functionally-defined location crucial for visible categorization1,2.10 Aug 2020

Prosopagnosia is concept to be the end result of abnormalities, damage, or impairment inside the proper fusiform gyrus, a fold in the brain that appears to coordinate the neural systems that manage facial notion and memory. Prosopagnosia can result from stroke, traumatic brain damage, or positive neurodegenerative illnesses.

The fusiform gyrus, additionally known as the occipitotemporal gyrus, is a structure spanning the basal surface of the temporal and occipital lobes1. it is the most important element of the human ventral temporal cortex, a functionally-described location important for visual categorization.

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Explanation:

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