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Thepotemich [5.8K]
3 years ago
5

Why was natural selection an important contribution to the theory of evolution?

Biology
1 answer:
kykrilka [37]3 years ago
5 0
Natural selection was the entire foundation of evolution. It's the theory of survival of the fittest, and only those that survive with the best traits live to reproduce. Bad traits are taken out of the gene pool over time because of death.

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in a second experiment, the plasmid contained the gene for human insulin as well as the amp gene. which of the following best pl
Sphinxa [80]

IV only

Plate IV will only have the trangenic E Coli hence will have the highest percentage of bacteria that are expected to produce insulin.

Explanation:

The transgenic <em>E. coli </em>will have taken up the plasmid with the insulin and <em>amp</em> genes hence they will be able to survive and grow in amplicilin antibiotic.

In plate IV, the wild type <em>E. coli</em> will be eliminated by the antibiotic (because they do not have the gene for resistance) hence providing no competition for resources, in the agar, with the transgenic <em>E coli</em>. This will ensure optimal growth for the transgenic <em>E coli</em> even, than in plate III, producing highest percentage of insulin.

Learn More:

For more on gene cloning check out;

brainly.com/question/2572556

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4 0
3 years ago
Give a scenario where a cell may need to perform a form of endocytosis and exocytosis
Firdavs [7]
<span>A scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules.
A scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell. The movement of macromolecules of polysaccharides or proteins out of or into the cell is known as Bulk transport.
Bulk transport is of two types which include endocytosis and exocytosis whereby both require an expenditure of energy. Exocytosis materials are being exported out of the cell via secretory vesicles.
Golgi complex they do package macromolecules into transport vesicles which travel to and spill its content out of cells. Exocytosis is very much important in the expulsion of waste materials out of the cell and also in products secretion. Endocytosis is the process where materials move into the cell.
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6 0
3 years ago
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As air moves away from the tropics and toward the poles, it becomes
Semenov [28]
The is should be C, Im not 100% sure though...
6 0
3 years ago
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Which is not true of gene expression?
MrRissso [65]

In simple terms, Gene expression can be stated as the process by which the heredity details in a gene sequence a be made into a functional gene.

<u>Explanation:</u>

  • The odd one for this question is probably would be "it occurs because of cellular signals within your body".
  • It explains how a cell functions. In Gene expression, the gene encodes the protein and the message from DNA to RNA gives the cell functions.
  • It is the specific combination of genes that are turned on or off. It can be stated as the process of turning off and turning on, it acts as a switch to on and off it is known as the gene expression or gene regulation.
  • It creates different DNA within each of your cell types. The unique design of gene expression results in unique and different combinations of proteins and makes each cell types.

3 0
3 years ago
Producers contain pigments like ____ to trap the sun’s energy and used it to make food.
Pavlova-9 [17]

Answer:

chlorophyll

Explanation:

  • Chlorophyll is a green photosynthetic pigment found in plants, algae, and cyanobacteria.
  • Green substance in producers that traps light energy from the sun.
6 0
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