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3 years ago

What is instantaneous speciation?

Biology

1 answer:

Elodia [21]3 years ago

5 0

<h2>Instantaneous speciation;the formation of a new species over a few generation.</h2>

Explanation:

This is a type of speciation where new species are produced which are separated from the parental individual by biological or geographical barrier.

This type of speciation occur among individual and not in a population.

It is a kind of sympatric speciation which is caused by poliploidy.

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HELP!! DNA was isolated from water samples taken from six different sites. This gel

VladimirAG [237]

After running DNA in a gel, bands of different sizes and species might appear. Scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C).

When DNA was isolated and run in a gel, many bands migrated to different points.

These bands were the different-sized fragments of DNA samples from different species from the six sites.

Researchers wanted to figure out where the silver carp is.

To do it, they needed to identify the bands on the gel that belonged to the silver carp DNA, so they included negative and positive controls to make comparisons.

<h3>Positive and negative Controls</h3>

Negative and positive controls guarantee the interpretations of the results.

The positive control shows the band sizes that belong to the silver carp DNA.

Any band in the sampling sites that matches one of the positive control bands indicates that the species is present at that site.

The negative control is the opposite. It is the absence of the species' DNA.

<h3>Results interpretation</h3>

As we can see, there are four sites where the bands match one of the bands of the positive control. These are,

North shore site 1
Chicago site 1
Calumet site 1
Calumet site 2

This means that at these four sites, the silver carp is present.

So scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C).

By looking at the lane of the North Shore site 1, we can also see another band (Thinner and grey). But this band does not match either of the positive control bands. This result suggests that the grey band belongs to another species' DNA.

You can learn more about gel electrophoresis at

brainly.com/question/9437877

brainly.com/question/895793

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3 years ago

What is the primary function of the nervous system in keeping the body in homeostasis?

Fed [463]

The autonomic nervous system plays an essential role in keeping the body'sinternal environment (temperature, salt concentration, blood sugar, oxygen and carbon dioxide level in blood, etc) in proper balance, a condition calledhomeostasis. ... These and other body actions are controlled by the autonomicnervous system.

Hope this helps :)

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3 years ago

What effect do the Aspergillus fungi have on the economy?

jarptica [38.1K]

It helps decompose dead waste such as animals and mice and birds and plants, it makes the earth cleaner.

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3 years ago

What is the flow of molecules in passive transport?

Vilka [71]

Answer:

The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.

Explanation:

hope this helps :D

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3 years ago

Read 2 more answers

The Susquehanna River, which runs through the states of New York, Pennsylvania, an Maryland , received the title- America's most

Lina20 [59]

This produces several negative effects on the biodiversity of the river ecosystem.

Explanation:

The Susquehanna river is polluted by the excess release of nutrients like phosphorous and nitrogen from agricultural land and sewage treatment plants. This can adversely affect the health of the river. The excess of nutrients will accelerate the growth of algae in the river.

The dead algae that settle at the bottom of the river decay by consuming the oxygen present in the river. This will reduce the amount of dissolved oxygen in the river and affect aquatic life.

Thick algal growth partially prevents the penetration of sunlight into the water and this affects the growth of submerged plants which are food to the fish.

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3 years ago