John and jane are planning a family, but each has a brother who has sickle-cell disease, so they are concerned that their children may develop sickle-cell disease. neither john nor jane nor their respective parents have the disease. they consult a genetic counselor who tells them that

there is no chance that any of their children will have sickle-cell disease
it's possible that they cannot produce a child with sickle-cell disease, but blood tests on them both will be required to make sure
all of their children will have sickle-cell disease
one of four of their children can be expected to have sickle-cell disease

There are eight major endocrine glands, each with a different function: pituitary gland: the “brain” of the endocrine system; regulates all seven of the other glands and secretes growth hormone.thyroid: regulates a person’s metabolic rate, which is the amount of energy expended daily by a person at rest.thymus: assists in the development of a person’s immune system.adrenal gland: regulates fluid and sodium balance within the body, and secretes epinephrine (“adrenaline”) when the body is under stress, producing the fight-or-flight response.ovaries (in females) and testes (in males): control the development of secondary sex characteristics.pancreatic islets: regulate blood sugar.pineal gland: regulates biorhythms and mood, and stimulates the onset of puberty.

Hey bby was a great time for y’all and tyty