they are caused by mutation. the best example of it are human blood groups.
The answer is 2
Let me know if is wrong
Answer:paracrine
Explanation:glands are specialized tissues that secrete specific chemicals substances.these substances may be enzymes,hormones or lubricating fluid.glands secretes their their products through several mechanisms.some involve the use of ducts ,while others do not.
In paracrine secretion,the secretory products reach their target cells by diffusion through the extracellular space or adjacent connective tissue.
Paracrine secretion do not use ducts.
Similar to paracrine is the endocrine ,in which the secretory products goes through the basal lamina ,into the underlying connective tissue and into the vascular syatem.they too do not use ducts
<span>the Fair Debt </span>Collection Practices Act, also know as the <span>FDCPA
(i know this is probably a little late) sorry :( </span>
Explanation:
I'm not sure but look online for the answers
