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Musya8 [376]
2 years ago
11

How can accidental transfer of DNA impact a crime scene investigation? In addition, explain why accidental DNA transfer cannot b

e used as an excuse to throw away all DNA evidence found at a crime scene?
Biology
1 answer:
xeze [42]2 years ago
3 0

Answer:

orensically valuable DNA can be found on evidence that is decades old. However, several factors can affect the DNA left at a crime scene, including environmental factors (e.g., heat, sunlight, moisture, bacteria, and mold). Therefore, not all DNA evidence will result in a usable DNA profile.

Explanation:

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What is the difference between a general interest Science question and a testable question
VLD [36.1K]
A testable question is something you need data for, ex: if i bounce a bouncy ball from larger heights, how high will it fly? it can't be just a regular yes or no question
8 0
3 years ago
Which set of terms describes a realistic cause-effect relationship between solar weather and Earth's magnetosphere? Select the t
Westkost [7]

Answer: Coronal Mass ejection-geomagnetic storm

Geomagnetic storm-aurora

Explanation:

I just took the test

3 0
3 years ago
Read 2 more answers
List three similarities and differences between plant and animal cells
Komok [63]
Similarities
Both plant and animal cells have eukaryotic origins
Both have common organelles like the nucleus, mitochondria and ribosomes
Both are surrounded by a cell membrane

differences
plant cells have a regular defined shape while animal cells have an irregular shape
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5 0
3 years ago
Explain how the terms oxidation and reduction apply even when there is only a partial shift of electrons between atoms linked by
aliina [53]

Explanation:

In a covalent bond, there is sharing of the donated electron by two atomic species having very small electronegative differences between them.

Oxidation is the loss of electrons by a specie and it usually lead to an increase in oxidation number.

Reduction is the gain of electrons by a specie. It leads to a lower oxidation number.

Since there is no actual loss of gain of electrons in a covalent body, the electronegativiy is at work.

Electronegativity is the ability of a specie to draw the shared electrons more to itself in a covalent bond.

  • Between two atoms bonded covalently, the more electronegative specie draws the electrons closer.
  • This leaves a partial negative charge on it.
  • The other electron then becomes partially positively charged.
  • We can then say, the more electronegative specie undergoes reduction.
  • The less electronegative one undergoes oxidation.

learn more:

Covalent bond brainly.com/question/3064597

Oxidation and reduction brainly.com/question/2278247

#learnwithBrainly

5 0
3 years ago
In an endothermic reaction, energy _____. exits the reaction is absorbed by the reaction stays the same throughout the reaction
belka [17]
In an endothermic reaction, energy is absorbed which causes the object to heat up. 
4 0
3 years ago
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