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Leni [432]
3 years ago
15

Which are required for natural selection to occur

Biology
1 answer:
torisob [31]3 years ago
6 0
4 conditions are needed.
Reproduction
Heredity
Hight rate of population growth
Differential survival and reproduction
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3. Describe the benefits and drawbacks of experiments in a laboratory compared to experiments done in a
labwork [276]

Answer:

Benefits:

In  a lab, scientists can control the conditions according to their research and study. This allows them to focus on a single perspective.

On the other hand, in a natural setting there are complex interactions due to which focusing on a single attribute can be difficult.

Drawbacks:

Ina  laboratory experiment, we cannot control every variable which might be having an effect on our concerned subject as compared to a natural setting. This is because lab experiments are performed in a controlled experiment. Hence, there might be difference of results in a lab experiment and nature.

6 0
3 years ago
A mouse had a gene sequence of GTT coding for leucine, an amino acid. mutation in this gene led to the formation of GTG. However
Sergeu [11.5K]

Answer:

1- substitution.

2- neutral.

Explanation:

The change in the genetic sequence of the organisms known as mutation. Mutations might be sudden and heritable in nature. spontaneous mutation and induced mutation are types of mutation.

A change that causes a change in single base pair of a gene sequence is called substitution mutation. The original leucine sequence is GTT and the mutated sequence is GTG. Thus T has been substituted by G.

Mutation can be beneficial, detrimental or neutral. The neutral mutation is that does not affect the physical change. Both GTT and GTG code for the same amino acid so it would be neutral.

8 0
3 years ago
If the lithosphere is resting on the asthenosphere and you put a lot of
statuscvo [17]

Answer:

Explanation:

Can you think of a solid that can flow?

You use one twice a day! Toothpaste is a solid that can flow. Is the asthenosphere made of toothpaste? Only if the

toothpaste is ultramafic in composition, and then it would only be able to flow if it were really, really hot. Still the

toothpaste analogy gives you a good image of how the asthenosphere might behave if you squeezed it!

Lithosphere

The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid

solid. The lithosphere is the outermost mechanical layer, which behaves as a brittle, rigid solid. The lithosphere is

about 100 kilometers thick. How are crust and lithosphere different from each other?

7 0
3 years ago
2. How can doctors most effectively<br> destroy the resistant bacteria?
tiny-mole [99]

Answer:

give the patients fluid and rest

Explanation:

This would be the best idea. The thing that is going on is just a (bacteria), so what the doctor would want to do is give the person some fluid's to help kill the bacteria and while this is happening, the patient should also rest so that work will function.

8 0
3 years ago
Peptic ulcers are sores in the lining of the stomach, they are cause by bacterial infection. The bacteria increases the acid in
V125BC [204]

Answer:

Peptic ulcer disease occurs when open sores, or ulcers, form in the stomach or first part of the small intestine. Many cases of peptic ulcer disease develop because a bacterial infection eats away the protective lining of the digestive system. People who frequently take pain relievers are more likely to develop ulcers.

Explanation:

5 0
3 years ago
Read 2 more answers
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