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Svetllana [295]
3 years ago
13

Please help can anyone write a summary about Antibiotics

Biology
1 answer:
rjkz [21]3 years ago
4 0
Antibiotics are powerful medicines that fight bacterial infections. Used properly, antibiotics can save lives. They either kill bacteria or keep them from reproducing. Your body's natural defenses usually take it from there. Antibiotics do not kill viruses.
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In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of the allele a is 0. 3. What i
zavuch27 [327]

Here, given-

homozygous alleles 'a' have a frequency of 0.3.

Also the alleles are in equilibrium in a Hardy-Weinberg population. The frequency of individuals that are homozygous for this allele are= 0.49.

The Hardy-Weinberg equilibrium can be defined as the principle which states that the variation in the genetic makeup of a population remains constant and unchanged till there are no external interferences, influencing the population.

Calculation-

p + q = 1\\0.3 + q= 1\\q= 1- 0.3\\\\q= 0.7

Then to find the frequency of the individuals homozygous for this allele the following formula needs to be used-

p^{2} + 2pq + q^{2} =1

p^{2} = dominant homozygous frequency\\2pq= heterozygous frequency\\q^{2} = recessive homozygous frequency\\

Thus, the individuals homozygous for the allele can be calculated by q^{2} = (0.7)^{2} \\= 0.49

Learn more about the Hardy-Weinberg equilibrium here-

brainly.com/question/16823644

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4 0
2 years ago
In designing an experiment that would support endosymbiotic theory, which of the following would provide the best evidence?
netineya [11]

<span>Answer:  “Comparing  the mitochondrial DNA between different eukaryotes to see how closely they are related.”</span>

The endosymbiotic theory focuses on the origin of two eukaryotic organelles that have bacteria characteristics (mitochondria in animals and chloroplasts in plants). These two are s  are believed to have developed from symbiotic bacteria.

<span>In designing an experiment that would support the endosymbiotic theory, the statement that would provide the best evidence is comparing mitochondrial DNA between different eukaryotes to see how closely they are related.</span>

7 0
3 years ago
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How does pollen typically travel to a female cone?<br><br> birds<br> water<br> wind<br> insects
Vinvika [58]

Answer:

Pollination, the transfer of pollen from flower-to-flower in angiosperms or cone -to-cone in gymnosperms, takes place through self-pollination or cross-pollination. ... The placement of male and female flowers on separate plants or different parts of the plant are also barriers to self-pollination.

Explanation:

8 0
3 years ago
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Therefore,the independent variable was________, and the dependent variable was ______.
wel

Answer:

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

3 0
4 years ago
Does mitosis only occur in humans? Pls help!
olga nikolaevna [1]
No, it doesn't. It also occurs in animals and plants.
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3 years ago
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