Answer: All the statements of the question are correct.
Sickle cell disease is an autosomal recessive disorder that is characterized by formation of defective hemoglobin protein, which results in sickle shaped RBC ( red blood cell).
This disease is caused by mutation in the gene that is responsible for the protein hemoglobin ( which transport oxygen throughout body).
It is inherited by the offspring when both the mutated copy of genes ( one from each parent) are passed to him.
Carriers of the disease exhibit increased resistance to malarial parasites by controlling the level of free haem in the blood ( through enzyme heme oxygenase that produces a toxic carbon monoxide gas). The resistance thus developed, is a mutation.
Therefore, all the statements in the given question are correct.
This is ataxia caused by a dysfunction of the cerebellum - a region of the brain involved in the assimilation of sensory perception, coordination, and motor control. Cerebellar ataxia can cause neurological problems such as: ... lack of coordination between organs, muscles, limbs, or joints.
Sunlight help to provide energy to the plant to complete the process. Basically, the plant harvest the solar energy.
I believe it goes in the following order top down
1 5 3 4 2.
I believe the cerebrum is the largest part of the brain, so the answer should be C.
