Main parts and their functions :
- Hypothalamus : Links the nervous system to the endocrine system via the pituitary gland. It controls the release of 8 hormones by the pituitary gland, controls body temperature, control of food and water intake, hunger and thirst!
- Pituitary gland : Produces essential hormones for everything living such as the growth hormone, adrenocorticotropic hormone, thyroid stimulating hormone, luteinizing hormone and follicle stimulating hormone, etc.
- Thyroid gland : Produces thyroid hormones that regulate the body metabolism, play an important role in bone growth and development of the brain and nervous system in children!
- Parathyroid glands : Release parathyroid hormone which plays a role in regulating calcium levels in the blood and bone metabolism.
- Adrenal glande : Produce hormones that help the body control blood sugar, burn protein and fat, react to stressors, and regular blood pressure.
- Pineal body/gland : Secretes the melatonin hormone which may help regulate the wake-sleep cycle of the body.
- Reproductive glands : Main source of sex hormones for males and females.
- Pancreas : Has digestive and hormonal functions. One part of the pancreas called the exocrine, secures digestive enzymes. While the other part of the pancreas called the endocrine, secretes hormones called insulin and glucagon. Overall, these hormones regulate the level of glucose in the blood.
Hope this helps :)
1. The group nearest the end or with the shortest stem of a phylogenetic tree has evolved most recently. In this case it is eutherians.
2. The group with the longest stem has been around the longest: fish
3. A direct common ancestor will share the same immediate line, like marsupials and eutherians. Fish and marsupials do not have a common direct ancestor.
Answer:
Point mutation is the correct answer.
Explanation:
Sickle cell disorder is a genetic disorder that is caused because of point mutation.
Due to point mutation protein lose their function which results in sickle cell disease.
The mutation in the Hemoglobin Subunit Beta gene in Sickle cell diseases affects the hemoglobin and the red blood cells molecules that transfer oxygen to the cells.
Sickle cell diseases can lead to stroke, organ damage,blindness, priapism,hypertension, acute chest problems.
The answer for this question would be B
