Answer:
have substantial variability in gene count
display variability in GC content
vary dramatically in the number and the size of introns contained.
Step-by-step explanation:
The genome of an organism basically refers to the total number of genes in the genetic bank of an organism. The genome will be composed of a number of genes each having a different set of instructions and gene expression. In addition, there is variability in the number of genes in the genetic bank. This results in a variation in the organisms of the same postulation. Thus the phenotype will be different for the same gene banks. In addition, the number of the non-sense codons, or introns will vary immensely. This results in the difference in the length of the genetic information and the proteins expressed.