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ratelena [41]
2 years ago
12

Imagine you are a detective examining a crime scene. You are trying to identify the person who committed the crime, so you colle

ct many samples at the crime scene. Which sample would be most useful in identifying the person who committed the crime?
Biology
2 answers:
stepan [7]2 years ago
7 0

Answer:

The sample most useful in identifying the person who committed the crime will be fingerprint. Fingerprints are the impression of finger ridges left on the surface of an entity or area in a crime scene. No two individuals can have same fingerprints. No two fingers of a same individual can produce same fingerprint. These are not found to be similar in identical twins. Fingerprints can be collected from porous and non--porous surfaces. These can be collected easily from crime scene. These fingerprints can be matched with specimens obtained from victims or offenders in order to establish the identity. The physical fingerprint analysis is more superior than DNA fingerprinting as in DNA fingerprinting the results obtained from twins could be similar but physical fingerprints cannot be similar because of different ridge characteristics. Therefore, valuable technique for identification of person who committed the crime.

torisob [31]2 years ago
6 0

Id say fingerprints would be the most useful sample to identifying the person who committed the crime

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Juan and his science class are constructing models of sugar crystals. He wants his model to show how the sugar molecules move in
inna [77]

Answer:

The correct answer is option B. "Fill a clear cube with them".

Explanation:

Sugar crystals, colloquially known as "rock candy", are conglomerates of sugar molecules that are formed when sugar-saturated water are cooled. Sugar crystals are arranged in a three dimensional repeating pattern, forming a cube like structure. Therefore, Juan could fill a clear cube with its plastic foam balls to represent sugar crystals. I attached an image of sugar crystals dissolving in water as reference.

4 0
2 years ago
Divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for e
motikmotik

Okay so for

Flock X: The food percentage is 41% ,and the Simulated Number of Birds in Flock for 2nd Generation is 12.

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8 0
2 years ago
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Think back about your experience in this lab using a dichotomous key. What might make it hard for someone to use a dichotomous k
krok68 [10]

Answer: why it is hard to use dichotomous key in the lab are;

If the organisms you want to use it for are similar.

If you can't see the little characteristics posses by the organisms you are using it for.

If all the pictures does not reveal all the important features of the organisms.

It is very difficult to use it to determine the anatomical structure.

Explanation:

Dichotomous key is an important method that is use in biology to identify organisms by separating or dividing the organisms into two groups. It is a tool created by scientists to help them identify organisms or objects. Once the organisms are group into two, more information is revealed more individually.

7 0
2 years ago
A cross between two pea plants results in 732 purple and 268 white plants. what is (are) the genotype(s) and phenotype(s) of the
coldgirl [10]
For the answer to the question above, I believe the answer is <u><em>that </em></u><span><u><em>both of the parents are heterozygous purple</em></u></span>.
I hope my answer helped you. Have a nice day!
4 0
2 years ago
Many intracellular signaling proteins act as switches that toggle from an inactive to an active state. Once activated, these sig
guajiro [1.7K]

Hello. You forgot to enter the answer options. The answer options are in the figure attached below:

Answer:

the option D is the right answer.

Explanation:

Option D shows a pathway where activation of the receptor would lead to an increase in gene expression. This is because in this option we can see that the transcription regulator is decreasing gene expression, but there is a receptor that is activated and that has the ability to inhibit the pathway, allowing the selected gene to be expressed efficiently. This is because the pathway shows two inhibitory steps, when this happens an activation is performed.

8 0
2 years ago
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