Sickle cell disease is passed on from parent to offspring. sickle cell disease is an disease. some carriers of the disease exhibit increased resistance to malarial parasites. this resistance is a mutation. part a 1. inherited 2. acquired part b 1. neutral 2. harmful 3. beneficial

Part A : 1. Inherited

Part B : 3. Beneficial

Explanation:

Sickle cell anemia is a disease that is inherited from parents to offspring. This disease is characterized by painful events like anemia,organ and tissue damage and other such complications.

Due to this disease RBCs are rapidly lost from blood prior to they go for circulation, therefore it is called as hemolytic  disorder because it destructs cell membrane of RBCs  results in the release of hemoglobin.

There is another interesting fact about Sickle cell anemia. The disease is caused by a mutation in a gene, and the disease is genetically recessive which means you need two mutated genes to develop Sickle cell Anemia, However, if you are carrier of disease but healthy, then you will be resistant to the deadly disease Malaria.This mutation increased the likelihood that carriers  for sickle cell disease will survive malaria infection.

Hope it helps!

i think the answer is b.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.