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Karo-lina-s [1.5K]
3 years ago
14

What type of mutation causes sickle cell anemia?

Biology
1 answer:
Roman55 [17]3 years ago
8 0

Answer:

Sickle cell anemia is the result of a point mutation in the hemoglobin gene. Sickle cell hemoglobin (HbS) causes red blood cells to form a sickle shape. People who inherit one sickle cell gene and one normal gene have sickle cell trait.

Explanation:

Sickle cell anemia is the result of a point mutation in the hemoglobin gene. Sickle cell hemoglobin (HbS) causes red blood cells to form a sickle shape. People who inherit one sickle cell gene and one normal gene have sickle cell trait.

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The diagram below shows the movement of Earth plates.
AveGali [126]

Answer:

A canyon

Explanation:

the movement of it because of the canyon being spilt of it

6 0
3 years ago
Each component of the body joins together with other components. As these components increase in complexity, they perform integr
Ainat [17]

Answer:

Cell, tissue, organ, organ system.

Explanation:

Cell is the structural and function unit of the living system. All living organisms are made of cell. Two main types of organisms are unicellular organism and multicellular organism.

Cell is the smallest unit. Cell will combine together and perform a unique function known as tissue. Similar tissue combine together to form a particular organs. Different organs combine together to form the organ system in the living organism.

Thus, the correct answer is option (b).

6 0
3 years ago
The opening and closing of _____________in your heart create the lub-dub sound and prevent the backflow of blood.
iVinArrow [24]

Answer:

Heart valves or the closure of the mitral and tricuspid atrioventricular (AV) valves at the beginning of ventricular systole and the closure of the aortic valve and pulmonary valve at the end of ventricular systole.

Explanation:

The heart tone “lub,” or S1, is caused by the closure of the mitral and tricuspid atrioventricular (AV) valves at the beginning of ventricular systole.

The heart tone “dub,” or S2 ( a combination of A2 and P2), is caused by the closure of the aortic valve and pulmonary valve at the end of ventricular systole.

4 0
3 years ago
What is a sugar phosphate backbone and how many dose a double helix have?
Tema [17]
A sugar phosphate backbone joins the nucleotide in a DNA sequence. A double helix has TWO backbones.
7 0
3 years ago
Explain how and why different parts of a plant are sinks for the translocation of sucrose at different times of the year in a co
rusak2 [61]

Answer:

The sucrose is transported around the plant in phloem vessels. It needs to be able to reach all cells in the plant so that the sucrose can be converted back into glucose for respiration. The movement of sucrose and other substances like amino acids around a plant is called translocation .

Belowground organs of plants (e.g. roots and rhizomes) are sinks during plant growth since they cannot perform photosynthesis. Some organs are both a source and sink. Leaves are sinks when growing and sources when photosynthesizing

8 0
3 years ago
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