answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natita [175]
2 years ago
8

Often only small amounts of DNA are found at a crime scene.Choose the technique that uses an enzyme to replicate DNA regions fro

m a small sample of DNA for use in DNA fingerprinting.
A. VNTRs (variable tandem repeats)
B. PCR (polymerase chain reaction) analysis
C. STRs (short tandem repeats)
D. mtDNA (mitochondrial DNA) analysis
Biology
1 answer:
statuscvo [17]2 years ago
5 0
The technique that uses an enzyme to replicate DNA regions from a small sample of DNA is called <span>PCR (polymerase chain reaction) analysis</span>. The answer to your question is B. I hope this is the answer that you are looking for and it comes to your help.
You might be interested in
For the majority of exercisers, adding excess protein or amino acid supplements to an adequate diet will stimulate muscle buildi
OverLord2011 [107]
The statement is true. There are two main anabolic stimuli for muscle that is exercise and protein ingestion. Protein not only provides the building blocks for the muscle, but also provides the trigger to stimulate muscle protein synthesis. Muscle protein synthesis is the physiological process of adding new amino acids to muscle  proteins and is the primary mechanism of muscle growth. 
3 0
2 years ago
Promoters and enhancers are DNA sequences both bound directly by ____________.
babymother [125]

Answer:zbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Explanation:

5 0
2 years ago
Read 2 more answers
Generally speaking, which of the following mutations would most severely affect the protein coded for by a gene?a) a base substi
Pavlova-9 [17]

Answer:

Answer is C.

Explanation:

For A and B, a base substitution affects one of the three bases that comprise a codon, the DNA/RNA unit that corresponds to a particular amino acid. If one base is substituted, one codon and therefore one amino acid will be affected. Codons have built-in redundancy, so even by changing one base, the new codon sometimes still corresponds to the same amino acid. Therefore, a base substitution at most affects one amino acid, and sometimes doesn't affect it all.

Frameshift mutations cause a lot more trouble. These occur when you have a deletion or insertion that changes the number of bases in your gene. As a result, the "frame" of the codons changes (everything shifts one way or the other by the number of bases added/removed). This affects EVERY codon downstream of the mutation, so you can imagine that such a mutation would have a bigger effect the closer to the start of the gene it occurs. This is why C is correct.

3 0
2 years ago
The isotope silicon-32 decays into phosphorus-32. Silicon-32 has a half-life of 170 years and can be used to find the age of roc
Vsevolod [243]
The correct answers are B & C. Silicon-32 is the parent isotope, which decays into phosphorus-32 (daughter isotope). The silicon-32 amount is halved every 170 years, so we can use this to determine how old the rock is. The amount of phosphorus-32 increases over time, but it is not equal to the amount of silicon-32.
3 0
2 years ago
A student views the image of a cell magnified 40000 times the image is 50mm long calculate the actual length of the sample in mi
igor_vitrenko [27]

Answer:

  1.25 µm

Explanation:

The cell will have a length dimension that is 1/40000 times the length of the image:

  (50·10^-3 m)/(40·10^3) = 1.25·10^-6 m = 1.25 µm

8 0
2 years ago
Other questions:
  • When people plant vegetation they what ? erosion
    14·2 answers
  • The range of phenotypic differences possible as a result of different environments reacting with a specific genotype is called t
    15·1 answer
  • 10). A scientific study provides evidence that humans and apes had a common ancestor, an idea that most anthropologists accept a
    10·1 answer
  • Animals plants and other photosynthesizing organisms play important roles in the
    5·1 answer
  • A camel can survive several weeks without drinking water by simply eating green plants. When a camel does drink, however, it can
    15·2 answers
  • Which of the following describes tight junctions?
    8·2 answers
  • A human pancreatic cell obtains O2 and necessary molecules such as glucose, as amino acids, and Cholesterol from its environment
    13·1 answer
  • Within a double-stranded DNA molecule, adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine.
    9·1 answer
  • 90 POINT HELP ASAP!!!!!!!!!!!
    10·2 answers
  • Which macromolecule is involved in how hemophilia is passed from parents to their children
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!