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Zarrin [17]
2 years ago
14

DNA evidence analysis is an imperfect science. Provide two reasons why this may

Biology
1 answer:
HACTEHA [7]2 years ago
4 0

Answer:

Explanation:

Imperfect science can be described as the scientific study of a research/field that is not complete or is characterized with a number of faults. While there are many scientific research fields or focus that fall under this category (because scientists are constantly seeking to improve existing knowledge of various scientific field), let's limit our scope to DNA evidence analysis.

DNA evidence testing for instance is very expensive which makes it difficult (in most cases) for victims to request for it in cases of crime (except requested by the government). For instance, if a killing that involves a struggle was done in a small neighborhood of about a 100 people with no visual confirmation of the killer but just some blood samples of the killer, DNA evidence testing might still not be used in a case like this despite the  crime happening in a relatively small community.

Also, since DNA evidence testing relies on the gene and there is a lot of research going on at the moment on genes (including gene mapping and locus system) which can assist to lower the number of suspects by predicting the origins of suspects. It should be noted that reducing the number of suspects reduces the amount that will be spent on DNA analysis of the suspects (since there are fewer suspects).

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The following DNA is being replicated and the origin of replication is in the middle of the sequence and marked with three stars
xxTIMURxx [149]

Answer:

5'GATCGTAA3'

5'ATTCTAGA3'

Explanation:

As requested in the question above, the primers were presented with 8 nucleotides, with the nitrogenous bases of the DNA, and in the 5'-3 'direction.

Primers are small fragments of DNA that are used by DNA polymerase to form new strands. The primes attach to pieces on the ribbon, through the complementarity of the nitrogenous bases, serving as a template for the DNA polymerase to create the new ribbon.

DNA polymerase uses primers at the origin of replication, and can follow the path from the right or from the left, depending on the primers used, for this reason, this question has two answers.

8 0
2 years ago
Japan is the leading producer of farm-raised shrimp, offering a lower price than Americans who farm or catch shrimp for a living
il63 [147K]
The most likely answer is
D)Decreased number of fish species who use the estuaries. 

The Japanese model for shrimp farming in estuaries basically involves converting estuary areas into shrimp farms, isolating these areas and dedicating them solely to the farming of shrimp. This excludes other fish species from areas that were previously the environment in which they lived.
7 0
2 years ago
In translation, the cell uses the genetic information contained in mRNA to make the proteins that carry out the cell's work.
stellarik [79]

Answer:

The correct option is d) UAG

Explanation:

Central dogma can be described as the process in which the transcription and translation occurs. The process by which mRNA is made from the DNA is called transcription and the process by which proteins are made by mRNA is called translation.

The first codon present on the DNA is TAG. The mRNA formed from this codon will be AUC. When this mRNA will travel from the nucleus to the cytoplam, the tRNA will bring the anticodons UAG for the first mRNA codon. Hence, the correct option is D.

5 0
2 years ago
Gregor Mendel’s pioneering genetic experiments with pea plants occurred before the discovery of the structure and function of ch
RUDIKE [14]

Answer:

The traits were linked

Explanation:

Gregor Mendel often called the father of genetics was a priest as well as scientist. He conducted many science experiments and determined the law of independent assortment and segregation.  He did however noticed that there were some traits seen in the parents that were passed to the offspring in the same combination. These were termed "linked-traits" and were the first indications that genes may be linked.

3 0
2 years ago
What is a disacharride?
irinina [24]
2 monosaccharides (glucose monomers) combined
4 0
2 years ago
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