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Stels [109]
3 years ago
11

A biologist wishes to take a useful gene found in penguins and introduce it into some bacterial cells. Her experimental procedur

e is given below.
Use a restriction enzyme to cut a gene out of the penguin DNA.
Use a restriction enzyme to cut open a plasmid.
Treat the plasmid with DNA ligase.
Treat the plasmid with DNA polymerase.
Introduce the plasmid into bacterial cells.

A step is missing. Where should it go in this procedure?

“Mix the desired gene and plasmid together” should go after step 5.
“Mix the desired gene and plasmid together” should go between steps 3 and 4.
“Mix the desired gene and plasmid together” should be the first step.
“Mix the desired gene and plasmid together” should go between steps 2 and 3.
Biology
1 answer:
Scilla [17]3 years ago
8 0

Answer:

The last one IM like 80% sure its the answer

Explanation:

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Northern flickers are woodpeckers of the eastern United States. Males, but not females, have black feathers that resemble a mous
jek_recluse [69]

Answer:

This suggests that the moustache is a releaser for aggression.

Explanation:

<em>Fixed action patterns</em> are instinctive programmed responses in different species that are triggered by a specific external sensory stimulus. These stimuli are called sign stimuli or releaser. When the sign occurs, the animal starts a sequence of acts in response to the stimulus and continuous until the series of actions is completed.

The black feathers resembling a mustache in a <em>Northern flickers</em> male are an external sensory stimulus. This trait that can provoke another male to respond aggressively, as a f<em>ixed action pattern</em>.  

This trait might be considered as an <em>unconditioned stimulus</em>, which <em>provokes an unlearned or reflex reaction</em>. These aggressive responses are triggered by reflex.

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3 years ago
Garden peas are difficult to grow because they mature slowly. True or false
netineya [11]
Gregor Mendel planted garden peas and used them as the basis of his study of inherited traits. They do not mature slowly.
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Korvikt [17]

Answer:

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8 0
3 years ago
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Some people call Earth the "Blue Planet," why do you think this is? Of all the water on Earth, only about 1% is available for hu
pochemuha

Answer:

I think it's not because of the water we use it's the water we have.

Explanation:

Because our planet is made up of 75% water it is naturally the first thing to recognize.

3 0
2 years ago
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What would be the magnification of a specimen viewed with a compound light microscope that has an objective power of 10x and an
mixas84 [53]

Answer:

Objective Lenses: Usually you will find 3 or 4 objective lenses on a microscope. They almost always consist of 4x, 10x, 40x and 100x powers. When coupled with a 10x (most common) eyepiece lens, we get total magnification of 40x (4x times 10x), 100x, 400x, and 1000x. To have good resolution at 1000x, you will need a relatively sophisticated microscope with an Abbe condenser. The shortest lens is the lowest power, the longest one is the lens with the greatest power. Lenses are color coded and if built to DIN standards are interchangeable between microscopes. The high power objective lenses are retractable (ie 40xr). This means that if they hit a slide, the end of the lens will push in (spring loaded) thereby protecting the lens and the slide. All quality microscopes have achromatic, parcentered, parfocal lenses.

Explanation:

I don't know for sure if this is correct but hopefully it is( ꈍᴗꈍ)

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