The dna in a bacterial (prokaryotic) chromosome is best described as:
a) a single circular double-helical molecule.
b) a single linear double-helical molecule.
c) a single linear single-stranded molecule.
d) multiple linear double-helical molecules.
e) multiple linear single-stranded molecules.
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Ответ:
A
Explanation:
Unlike the linear, double stranded, helical, supercoiled Eukaryotic chromosome, the prokaryotic bacterial chromosome is circular, single molecule of double stranded, helical, supercoiled DNA.
The bacteria DNA is said to be circular because the two ends of the double-stranded DNA are covalently bond together to form both a physical and genetic circle.
Plasmid another genetic material in bacterial are circular, double stranded DNA molecules that replicate independently if the bacteria DNA.
Ответ:
c. vital and non-essential
antonyms are opposites