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Question

Plant viruses have _____ and animal viruses are _____.

A
DNA; Tadpole-shaped
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B
RNA; Polyhedral-shaped
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C
RNA or DNA; Varied in shape
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D
RNA and DNA; Rod-shaped
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Solution

The correct option is C RNA or DNA; Varied in shape

Plant viruses can have either RNA or DNA as their genetic material. For instance, the cauliflower mosaic virus contains dsDNA (double-stranded DNA). It is circular and shows semi-discontinuous type of replication. RNA is the genetic material in other plant viruses like the tobacco mosaic virus. Animal viruses are of a variety of shapes. The influenza virus for instance, is spherical in shape, measuring about 800-1200A in diameter. Based on the host, certain viruses even have the ability to change their structure accordingly, as is the case of HIV.


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