Indicate whether each of the following features of gene regulation exists only in prokaryotes, only in eukaryotes, or in both.Nucleosome b.Operator…

8 Indicate whether each of the following features of gene regulation exists only in prokaryotes, only in eukaryotes, or in both.
a. Nucleosome
b. Operator
c. Trans-acting regulatory proteins
d. Sigma-factors that recognize promoter sequence
e. Histone modification
f. Promoter
g. TATA-binding protein
h. Distance-independent cis-acting regulatory sequence
i. Alternative splicing
j. siRNA