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drek231 [11]
3 years ago
12

Which theory proposes that species evolve during short periods of rapid change?

Biology
1 answer:
Soloha48 [4]3 years ago
6 0
Punctuated equilibria.
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You use two drugs (sulfisoxazole and trimethoprim) to treat a bacterial infection and notice that bactericidal activity is enhan
mezya [45]
Antagonsitic effect/interaction/response

In order to combat antiobiotic resistance, and to possibly enhance the activity of antibiotics, they are sometimes used in combinations during treatment. However, three possible responses or effects can manifest. 

First is antibiotic synergy, where the combined effect of the antibiotics enhances the activity/potency of the treatment compared to when the antibiotics are administered singly.

The effect is also distinguished from another type of response, which is additive effect, where the combined effect of the antibiotics is more or less equal to the combined activity/potency of each of the antibiotic when applied singly. Antibiotic synergy results in even greater enhancement of the activity of the combined antibiotics compared to additive effect. 

Lastly, there is the antagonistic effect or response, where the combined effect of the antibiotics results in the weakening of the potencies of the antibiotics relative to the combined (additive effect) potencies of each of the antibiotics. 
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3 years ago
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Arada [10]
The picture is upside down
6 0
3 years ago
A behavior or characteristic that is altered and passed from one generation to another generation is a(n)
aleksandrvk [35]

Answer: The correct answer for the question is- An inherited trait.

Inherited traits are those features or characteristics of an organism that are passed from one generation to the next generation ( such as eye color, skin tone, hair color) in the form of genes ( segment of DNA corresponding to particular protein, which depicts specific trait of an organism).

If the genetic material ( DNA) is altered during its transfer that is if any change in its nucleotide sequence ( also called mutation) occurs, then it will exhibit in the form of an altered phenotype in the next generation.

         

4 0
3 years ago
Small, isolated populations of collared lizards remain in glades of desert-like habitat scattered throughout the oak-hickory for
dusya [7]

Answer:

Option A

Explanation:

Options

A. most populations were fixed for a single genotype, but genotypes varied among populations

B. average heterozygosity was declining steadily over time

C. individual populations were polymorphic for several loci and most populations were genetically similar to one another

D. all populations were fixed for the same allele at each locus studied

Solution

As per the study conducted by Templeton, it was found that human affect the biodiversity at all biological levels such as genetic, ecosystem, species etc. and behind genetic variation two important factors are genetic drift and gene flow.  

Both the gene flow and genetic drift produce opposite results as genetic drift increase variation with in the species but decrease variation with in the local population and the opposite of this happens in gene flow.  

Genetic drift has actually lead to speciation of collared lizards  among themselves for a specific genotype

Hence, option A is correct

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3 years ago
Proteins are made of ________________________, and the sequence of these determine how the protein will fold up and take shape,
vazorg [7]
<span>Proteins are made of amino acids, and the sequence of these determine how the protein will fold up and take shape, which ultimately determines it's function. 
</span>
4 0
3 years ago
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