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Leokris [45]
3 years ago
5

Early one Monday morning, as Mr. Stevens the custodian, walked through the school, he noticed a foot sticking out from under a s

cience lab bench. Mr. Stevens flipped on the light and saw Mel Brown laying under the lab table. Stevens felt for a pulse. Nothing. He noticed blood on Mel's head and hands; there were blood spatters on the floor and a larger pool of blood on the floor under Mel's head. Mr. Sevens dialed 911. The police along with their forensics team arrived shortly before school started. They collected the evidence and took the body to the crime lab. Using DNA evidence forensics determined that there was two blood samples at the crime scene: Mel's and an unidentified sample. The police asked Mr. Stevens for a DNA sample and he immediately gave them one.Some students had told the police that Mel had been arguing the afternoon before with two of his friends: Carl Smith and Gerald Jones. Mel had apparently done their science lab work and the boys had refused to pay him, as previously decided. The police decided to collect DNA samples of Carl and Gerald as well. The results provided some enlightening evidence: one of the three people tested HAD been at the crime scene! Using STR evidence, can you identify the person whose blood was found at the scene?
Biology
1 answer:
enot [183]3 years ago
6 0

Answer:

Yes STR's can be used to identify whose blood was found at the scene because every individual has a unique number of repeats at the specific loci in their DNA that is being examined during STR analysis at the crime lab.

Explanation:

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which term refers to the structure that forms the surface of a cell separeting its conctents from the outside world
Deffense [45]

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Consider the observation that serine is the amino acid residue that can be replaced by another amino acid with the least effect
iVinArrow [24]

The question has incorrect option, however the question can be answered by the general explanation. On the basis of the general explanation the answer is as follows:

Answer:

The correct answer is - Serine has a small side chain that can fit in any relatively polar environment.

Explanation:

Serine is an amino acid that have a small side chain in comparison of other amino acid and can be replaced by another amino acid with very least effect on the structure and function of a particular protein as they can fit in any relatively polar environment.

Serine have hydroxyl group in their side chain. It is polar amino acid that can easily establish itself in any polar condition and cause least changes in protein structure and function.

Thus, the correct answer is - Serine has a small side chain that can fit in any relatively polar environment.

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