Question

Identify correct statements about 'DNA content'. A. Each species has a characteristic content of DNA. B. Eukaryotes always contain much more DNA than prokaryotes. C. Lower eukaryotes in general have higher DNA than E. coli. D. Vertebrates have equal amount of DNA as in E. coli. E. 1 pg of DNA is equivalent to 93 cm of DNA. Choose the correct answer from the options given below:

• A. A, B, C only
• B. B, C, D only
• C. A, B, D only
• D. A, B, E only

Hint:

Remember that DNA content can vary significantly between different species and types of organisms.

Answer 1

The Correct Option is A

Step 1: Concept
DNA content in different organisms

Step 2: Meaning
This question tests the understanding of DNA content variations among species and between eukaryotes and prokaryotes.

Step 3: Analysis
A. True - Each species has a characteristic amount of DNA, which is related to their genome size. B. False - Eukaryotic cells can vary widely in DNA content compared to prokaryotes; it depends on the complexity of the cell's structure and function. C. True - Lower eukaryotes generally have more complex genomes than bacteria like E. coli, hence higher DNA content. D. False - Vertebrates do not necessarily have equal amounts of DNA as in E. coli due to differences in genome size between species. E. True - 1 picogram (pg) of DNA is approximately equivalent to a thread of DNA that would stretch about 93 cm.

Step 4: Conclusion
The correct statements are A, C, and E. Final Answer: (A)