What is probability?
1 answer:
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Answer:
(3rd option)The likelihood that a certain event will occur
Explanation:
- Probability is the likelihood that an event will occur and is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.
- Flipping a coin is a great example of showing probability you can flip the coin knowing that there are only going to be two possible outcomes. the coin could land on heads or tails.
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Discovery
In 1928 it was discovered by Frederick Griffith in an experiment generally known as transformation.
Experiment
In his experiment he considered two strains of <em>streptococus pneumonia,</em> one was R-type which was non-virulent and cause no disease in mice, other was virulent and S-type which cause disease and at last death of mice.
This experiment was comprised of four steps which are as follow:
Step 1:
First he injected living strain of S into mice, after sometime mouce died.
Step 2:
He injected living strain of R into mice, the mice alive as he did not got any disease.
Step 3:
He injected heat killed strain of S into mice and mice remain alive.
Step 4:
He mixed living R strain with heat killed S strain and then inject into mice. As a result the mice died.
Conclusion:
It was found that genetic material from heat killed S stain were transferred to living R (non-virulent) strain, as a result R become virulent and cause the death of mice.
In 1928 it was discovered by Frederick Griffith in an experiment generally known as transformation.
Experiment
In his experiment he considered two strains of <em>streptococus pneumonia,</em> one was R-type which was non-virulent and cause no disease in mice, other was virulent and S-type which cause disease and at last death of mice.
This experiment was comprised of four steps which are as follow:
Step 1:
First he injected living strain of S into mice, after sometime mouce died.
Step 2:
He injected living strain of R into mice, the mice alive as he did not got any disease.
Step 3:
He injected heat killed strain of S into mice and mice remain alive.
Step 4:
He mixed living R strain with heat killed S strain and then inject into mice. As a result the mice died.
Conclusion:
It was found that genetic material from heat killed S stain were transferred to living R (non-virulent) strain, as a result R become virulent and cause the death of mice.