In 1928, Frederick Griffith conducted an experiment in which he injected mice with different kinds of bacteria. When bacteria that cause disease (pathogenic) were injected into healthy mice, the mice got sick and died. Other types of bacteria (nonpathogenic) did not cause the mice to die. Griffith took the DNA from dead pathogenic bacteria and transferred it into living nonpathogenic bacteria. These altered bacteria were then injected into healthy mice, which subsequently died of the same disease caused by the pathogenic bacteria. Based on this information, which statement would be a valid conclusion?

a) When an organism dies, the DNA changes; it no longer provides the same genetic information.

b) When DNA from one organism is transferred to another organism, the DNA no longer functions.

c) DNA in different types of bacteria carries exactly the same type of information.

d) When DNA from one organism is transferred to another organism, it can give new traits to the second organism.

The correct conclusion from Frederick Griffith's 1928 experiment on bacterial transformation is d) When DNA from one organism is transferred to another organism, it can give new traits to the second organism, as seen when non-pathogenic R strain bacteria transformed into pathogenic S strain bacteria after acquiring DNA from the heat-killed S strain.

Explanation:

In 1928, Frederick Griffith conducted an experiment that demonstrated the process of bacterial transformation. He observed that when he injected mice with a mixture of live R strain (non-pathogenic) and heat-killed S strain (pathogenic) of Streptococcus pneumoniae, the mice died of pneumonia. The live R strain had absorbed the DNA from the dead S strain, gained a capsule, became pathogenic, and thus transformed into the S strain. Consequently, this led to the conclusion that DNA carries genetic information which, when transferred to another organism, can endow it with new traits.

Based on these observations, the correct answer to the student's question is d) When DNA from one organism is transferred to another organism, it can give new traits to the second organism. This aligns with the experiment's results indicating that DNA is the material responsible for heredity and that it can transform the phenotype and genotype of an organism when it is absorbed from the environment.

shivjimishraVT shivjimishraVT · Answer 2 · 2024-05-14T02:00:01-04:00

The statement that would be a valid conclusion is as follows:

When DNA from one organism is transferred to another organism, it can give new traits to the second organism.

Thus, the correct option for this question is D.

What is DNA?

DNA may be defined as a type of genetic material that encodes the genetic information of an individual and governs the process of transformation of traits and genotypes from one generation to another. DNA stands for Deoxyribonucleic acid.

According to the experiments performed by Frederick Griffith, it can be revealed that when the DNA of one organism is transferred to another organism, it can give rise to new traits in the second organism.

This is because it is plausible for DNA to be changed either through mutation or the introduction of foreign DNA.

Therefore, when DNA from one organism is transferred to another organism, it can give new traits to the second organism is a statement that would be a valid conclusion.

To learn more about Frederick Griffith, refer to the link:

https://brainly.com/question/4279558

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