In three to five sentences, explain why sickle cell disease became so prevalent in certain East African populations.

Biology

1 answer:

Vladimir [108]2 years ago

4 0

Answer:

A research study by Dr. Tony Allison proved that there was a connection between infectious parasitic disease, malaria and genetic disease, sickle cell anemia. As the malarial parasite was more common in East Africa, hence sickle cell became more prevalent in Est Africa. After collecting samples, Dr. Tony Allison found that children carrying the sickle cell allele had a lower parasite count, as if they were partially protected against malaria.

You might be interested in

I need help with 8 and 9

arlik [135]

Answer:

Explanation:

need better picture to see

7 0

2 years ago

What quantity is equal between two solutions that are isotonic ?

bazaltina [42]

An isotonic solution is a solution in which the amount of dissolved material is equal both inside and outside of the cell. Water still flows in both directions, but an equal amount enters and leaves the cell. Hope this helps. :)

8 0

3 years ago

As temperature increases the rate of enzyme activity increases until it reaches approximately 37 degrees Celsius. As temperature

UNO [17]

Answer: Option A

<u>Explanation:</u>

As temperature increases the rate of enzyme activity increases until it reaches approximately 37 degrees Celsius. As temperature increases beyond 37 degrees Celsius, the enzyme activity decreases. The activity decreases because the enzyme denatures.

Any enzyme has certain temperature, pH and pressure to maintain its activity. Only at the ideal or ambient parameters the enzyme works. Most of the enzymes that are present in the human body gets activated by 37 degrees and gets denatured beyond that temperature.

4 0

2 years ago

16. The lateral-line of a shark is used for

creativ13 [48]

Answer: A: Detecting and locating objects and moving animals in the water

Explanation:

Its used for sensing tiny vibrations in the water

6 0

2 years ago

Read 2 more answers

A capsule stain is described as a negative stain because the capsule itself __________. does not take up stain has a negative ch

KonstantinChe [14]

Answer:

Does not take up the stain.

Explanation:

Negative staining refers to the process wherein the unstained specimen is visualized under the darkly stained background.

One of the examples is capsule staining wherein the capsulated cells are stained with India ink or nigrosin dyes. The particles of these dyes stain the background blue-black but cannot enter the capsule.

Hence, the light-colored capsulated cells are visualized in the midst of the blue-black background.

6 0

2 years ago