The best explanation for the signs shown by Arianna is that a parasitic microorganism such as bacteria contaminated her food.
<h3>What is food contamination?</h3>
Food contamination is the presence in food of substances or particles that are not meant to be in the food and which when present causes harm to any person that consumes the food.
Food contamination occurs during either of the steps of food processing and handling such as harvesting, storage, or preparation.
The most common food contaminant are chemicals and microorganisms such as bacteria and fungi.
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Complete question:
Arianne recently traveled abroad where she enjoyed eating food from different countries and learning about different cultures. A week after she returned home, she checked into the hospital with signs of nausea, fever, and diarrhea. What best explains what happened to Arianne?
Answer:
GACCTG (the fourth option)
Explanation:
To find the correct complementary strand, we need to know this simple rule:
T always pairs with A and C always pairs with G.
So whatever letter you have in the DNA strand, the complementary strand will have the complement to it. In this case, we have CTGGAC. The complement of C is G, for T it is A, and so on. Therefore, the correct complementary strand is GACCTG (the fourth option).
Semilunar valve will be open
Yes, the different frequencies of evolutionary change could affect allele frequency in a population.
<h3>What are the agents of evolutionary change? </h3>
All populations are usual in a constant state of evolution. This means that all the species are continuously changing their genetic makeup over different generations. These changes can be subtle or they can be spontaneous.
If a population is not evolving, it is said to be in Hardy - Weinberg state. In this state, the allele frequency and the genetic makeup of the population will remain the same across generations.
The agents of evolutionary change defy the Hardy - Weinberg state. These are mutation, gene flow, non-random mating, natural selection and genetic drift.
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Answer:
Both organisms benefit in cooperation and competition, but only one benefits in predation.
