Describe three proteins that are produced by genes.

Explanation:

coding regions, called exons, which specify a sequence of amino acids.

non-coding regions, called introns, which do not specify amino acids.

regulatory sequences, which play a role in determining when and where the protein is made (and how much is made)

1. coding regions, called exons, which specify a sequence of amino acids.

2. non-coding regions, called introns, which do not specify amino acids.

3. regulatory sequences, which play a role in determining when and where the protein is made (and how much is made)

Explanation:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.