Evolutionary relationships among species are reflected in their _.
Correct answer: A. DNA and proteins
- A. DNA and proteins
- B. Only DNA
- C. Only proteins
- D. RNA
Explanation
Evolutionary relationships among species are reflected in their DNA and proteins, in their genes and gene products. If the sequences of monomers of genes and proteins of two species match closely, the sequence must have been copied from a common ancestor.
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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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