A mistake by cellular machinery, or damage from an environmental agent such as radiation may produce a mutated gene which is a permanently altered segment of dna.
A gene mutation is a perpetual change in the DNA sequence that forms a gene which makes the sequence different from what is present in most people. Gene mutations can be classified into; hereditary mutation (changes inherited from parents) and somatic mutation (changes caused by environmental factors such as ultraviolet radiation from the sun).
Because they aren't made out of cells, they don't grow, they don't make their own energy, and they can't keep themselves in a stable state. Hope that helps! :)
The word 'queue' in cell biology describes the long arm of a chromosome. Another definition for the word queue is a place in line. The correct answer is B.