Agenetic disorder in which part of the x chromosome seems to be attached to the rest of it by a very thin string of molecules is

fragile X syndrome

Explanation:

FMR1 gene mutations trigger fragile X syndrome.The gene FMR1 offers instructions on how to make a  protein called FMRP.

This gene helps to control the output of other proteins and plays a  part in the growth of synapses that are specific nerve cell connections.

It creates a variety of developmental issues including intellectual disabilities and  cognitive impairment. This disease usually affects males more significantly than women.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.