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Elza [17]
3 years ago
9

Differential stains function to Group of answer choices 1. highlight differences between cells or parts of a cell. 2. differenti

ate between bacteria and archaea. 3. more accurately determine the size and shape of fragile cells. 4. kill certain cells while allowing others to remain alive.
Biology
1 answer:
Stells [14]3 years ago
5 0

Answer:

1. Highlight differences between cells or parts of a cell

Explanation:

When two or more chemicals stains are used together for the purpose of staining then these stains are termed as Differential stains and the process as Differential staining.

Differential stains are often used because due to presence of multiple stains it becomes easy to differentiate different structures or parts of a cell or cellular organism. Since each stain stains different parts of the cell or microorganism, under the microscope we can see the cell parts stained by separate colours.

Crystal violet and Fuchsin are an example of differential stains. These are used in gram staining.

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2 years ago
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The 14 different species of finches in the galapagos islands originated from a single ancestral species. what is it about these
Daniel [21]
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3 years ago
Knowing that some individuals from Island 1 colonized Island 2, biologists sample the Mainland and two Island populations fifty
raketka [301]

Answer:

The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In <u>founder effect</u>, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, <u>genetic variability is reduced</u> and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.  

<em>In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time. </em>

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2 years ago
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3 years ago
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Answer:

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Explanation:

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3 years ago
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