Answer:
Any step of gene expression may be modulated, from the DNA-RNA transcription step to post-translational modification of a protein.
Hairs are mostly fibrous proteins and are composed of keratin, and also the main constituent of skin, nails, wool, woof, feathers etc.
Keratin is the essential fibrous protein which has a structural and protective functions in the epithelium.
Answer:
A. a cell process that releases energy from food
Explanation:
Oligonucleotide primers associate by hydrogen bonding to specific sections; primers are then extended.