Vaccines have a tiny amount of the virus/disease/etc that is going to prevent you from that, this is injected into you and it will work due to injecting a dead cell of that disease into your body.
B. Genetic equilibrium has been maintained.
C. Mutations have arisen that may have altered allele frequencies.
D. Individuals with new genes have immigrated into the population.
The correct answer is option C, Mutations have arisen that may have altered allele frequencies
There have been several instances where mutation in the gene of an insect is caused due to the harmful external environmental condition which are either created or occurs naturally. Usually, the organisms evolve themselves to sustain in an adverse environment condition. In the process of evolution, they go through the process of positive genetic mutation but sometimes the mutation may also produce negative effect on the DNA of an species through wrong or inefficient pairing/coding. Here in this case it can be stated that the chemical sprayed on insects might have attacked the gene pool of the insects thereby producing adverse genetic mutation.
When a farmer sprays insecticide on crops, the DNA of the insects that are not killed can be damaged, leading to mutations that may alter allele frequencies in the population.
A farmer spraying insecticide on his crops to kill unwanted insects has the effect of damaging the DNA of the insects that are not killed. This can lead to mutations that may alter allele frequencies in the insect population. Hence, the correct answer is C. Mutations have arisen that may have altered allele frequencies.
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Answer:
The difference between an independent variable and a dependent variable in an experiment is that the independent variable is the one that the researcher will change or alter in order to test the effects of the change on the dependent variable. The purpose of the experiment is to observe the relationship between changes in the independent variable and changes in the dependent variable. If the dependent variable changes as a result of the changes in the independent variable then the researcher knows that the two variable has a relationship.
Explanation:
Answer:
Clinical studies
Explanation:
B. Chemical energy to thermal energy
C. Nuclear energy to thermal energy
D. Potential energy to chemical energy
Answer:
The answer is B. Chemical energy to thermal energy Hopefully this helps!
Answer:
Each person needs to contribute is $75.
Step by step explanation:
It is given that the number of people is 25. Each of them would need to contribute $135.
Total amount contributed by 25 people is the product of 25 and 135.
Total amount contributed by 25 people is $3375.
Now 45 people has to contribute the same amount $3375.
If 45 people donate $3375, then each people donate
Therefore, each person needs to contribute is $75.