If the DNA of an human adult is lined up end to end, it will stretch nearly:
Correct answer: B. 100 billion km
- A. 50 billion km
- B. 100 billion km
- C. 200 billion km
- D. 300 billion km
Explanation
If the DNA of a human adult were lined up end to end, it would stretch nearly 100 billion kilometers, reaching a distance roughly equivalent to 60 times the distance from Earth to the Sun. This remarkable length showcases the compact yet intricately organized genetic blueprint that governs the complexity of human life.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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