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il63 [147K]
3 years ago
15

Discuss how science plays a crucial role in many courtrooms?

Biology
2 answers:
LenaWriter [7]3 years ago
4 0

Because it provides physical evidence linking suspects to crimes.

Hope this helped!

Good luck :p

~Emmy <3

Leona [35]3 years ago
4 0
The evidence. DNA samples, forensics, physics, biology, chemistry, etc. Sciences can analyze the evidence to help explain what really happened.
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What can neither be created nor destroyed by ordinary means?
MAVERICK [17]
Energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. It states that matter can be neither created nor destroyed in ordinary chemical or physical changes.
5 0
3 years ago
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How does a presynaptic neuron know just how much of a certain neurotransmitter (NT) it has released into the synapse?
Llana [10]

Answer:

A presynaptic neuron knows when and how much of a certain neurotransmitter it has to release into the synapse by the frequency of the action potential.

Explanation:

Two nuerons connect to each other through synapse. When an action potential, or nerve impulse, arrives at the axon terminal, it activates voltage-gated calcium channels in the cell membrane, then the calcium which is present in hi highconcentration outside the neuron than inside, rushes into the cell. The Calcium then allows synaptic vesicles to fuse with the axon terminal membrane, releasing neurotransmitter into the synaptic cleft.

The nuerotransmitter than binds to the receptors at the post-synaptic cleft and causes the opening or closing of the channels, hence, depolarizing or hyperpolarizing the cells.This can produce a change in the membrane potential—voltage across the membrane of the receiving cell.

4 0
2 years ago
if the average movement of the particles in a sweater increases, what will happen to the sweaters temperature?
ella [17]

Answer:

It will not change

Explanation:

3 0
3 years ago
Which of these options represents the correct flow of events during meiosis II?Select one of the options below as your answer:
almond37 [142]
The option that represents the correct flow of events during meiosis II is A) sister chromatids pulled to opposite poles, nucleoi form, cytokinesis.
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3 years ago
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The following F2 phenotypic data was obtained from a Drosophila testcross using an F1 offspring. Assume red eye and brown body a
dmitriy555 [2]

Answer:

The genotype of the F1 was wy+/w+y.

Explanation:

One of the given options has a typo: the red eye-brown body offspring count should be 56 instead of 561.

<u>We have two genes with two alleles each:</u>

Red eyes (w+) is dominant over white eyes (w).

Brown body (y+) is dominant over yellow body (y).

The phenotypes of the F2 tesulting from a test cross (F1 x wy/wy) are:

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  • w+y/wy (red-eye, yellow body): 650
  • wy/wy (white-eye, yellow body): 38
  • w+y+/wy (red-eye, brown body 56

If the genes w and y are linked, two phenotypes in the F2 will be much more abundant than the other two. Recombination during meiosis is a rare event, so the most abundant phenotypes are the parentals (the ones present in the F1 parent).

Every individual in the offpsring has a <em>wy</em> chromosome, as this was the gamete inherited from the test cross individual.

In this case, the most abundant gametes are wy+ and w+y, so the genotype of the F1 was wy+/w+y.

Notice how when recombination occurs in the F1 parent, the recombinant gametes appear: wy and w+y+, which are the less abundant in the F2 progeny.

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