Answer:
A. True
Explanation:
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a vision, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins.
Answer:
A gene is a segment of a DNA strand.
The operon is effectively the center of transcriptional control. In addition to its main structural genes, the operon houses an operator and a promoter. In front of the promoter lies a regulatory gene that produces repressor proteins. When a repressor is in its active state, it binds to the operator.
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Answer: Human space exploration helps to discuss questions about our place in the Universe and the history of our solar system. Through addressing the challenges related to human space exploration we expand technology, create new industry, and help to foster a peaceful pro with other nations.