Question
All organisms contain DNA, and every organism's DNA is made of the same four nucleotides. The differences between organisms is simply based on the order of these nucleotides. Since all organisms have the same basic, universal structure for DNA, which of these must also be universal?
Responses
A All organisms have the same proteins.All organisms have the same proteins.
B All living things must have the same amount of DNA.All living things must have the same amount of DNA.
C All organisms must be genetically identical to each other.All organisms must be genetically identical to each other.
D All codons in all organisms' DNA code for the same amino acids.All codons in all organisms' DNA code for the same amino acids.
Responses
A All organisms have the same proteins.All organisms have the same proteins.
B All living things must have the same amount of DNA.All living things must have the same amount of DNA.
C All organisms must be genetically identical to each other.All organisms must be genetically identical to each other.
D All codons in all organisms' DNA code for the same amino acids.All codons in all organisms' DNA code for the same amino acids.
Answers
GPT-4o mini
The correct response is:
**D** All codons in all organisms' DNA code for the same amino acids.
This statement is true because the genetic code is universal, meaning that the codons (sequences of three nucleotides) in the DNA of all organisms correspond to the same amino acids. This universality allows for the same proteins to be synthesized across different species, although the actual sequences and amounts of DNA, as well as the specific proteins produced, can vary greatly among different organisms.
The other options (A, B, and C) are not universally true. Different organisms have different proteins, do not have the same amount of DNA, and are not genetically identical.
**D** All codons in all organisms' DNA code for the same amino acids.
This statement is true because the genetic code is universal, meaning that the codons (sequences of three nucleotides) in the DNA of all organisms correspond to the same amino acids. This universality allows for the same proteins to be synthesized across different species, although the actual sequences and amounts of DNA, as well as the specific proteins produced, can vary greatly among different organisms.
The other options (A, B, and C) are not universally true. Different organisms have different proteins, do not have the same amount of DNA, and are not genetically identical.