1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
I am Lyosha [343]
2 years ago
7

Which statement explains how a DNA mutation causes sickle-cell anemia?(1 point)

Biology
2 answers:
labwork [276]2 years ago
7 0

Answer:

DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape

Explanation:

Sickle cell mutation is a mutation that affect the production of red blood cell that is needed for the transport of oxygen in the bloods stream.

sickle cell mutation is a result of change in the amino acid which are building blocks of the protein hemoglobin.

The protein is what gives red cells their color, it has two subunits. The alpha

and beta subunit. There is a change in the arrangements of amino acid sequence and that is the basis for the sickle cell shape, beta subunit has valine an amino acid at position 6 instead of the glutamic acid. This alteration results in sickle cell problems that occur in people.

Lunna [17]2 years ago
5 0

Answer:

Explanation:

From the options:

The DNA mutation increases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.

The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells.

The DNA mutation decreases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.

O The DNA mutation prevents formation of hemoglobin, the absence of wirich causes a change in the shape of red blood cells.

<em>The correct answer would be that "</em><em>The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells. "</em>

<u>The sickle-cell anemia is caused by a change in the amino acid sequence of the hemoglobin - specifically, as a result of the substitution of the sixth amino acid, glutamic acid, by valine in the beta subunit of the proteins that make up the hemoglobin. A single base substitution causes glutamic acid to be changed to valine. </u>

The normal hemoglobin is disc-shaped and is able to effectively carry oxygen in the blood, unlike the sickle-cell hemoglobin which has the sickle shape and is not able to effectively carry oxygen in the blood.

You might be interested in
Scientists are observing lions hunting on the savanna. They notice that when the temperature of the air increases the lions are
borishaifa [10]

Answer: If the temperature increases, then the activity of the lions decreases.

7 0
3 years ago
Describe the basic components of<br> DNA (deoxyribonucleic acid).
Reika [66]

Answer:

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

Explanation:

8 0
2 years ago
Read 2 more answers
The diagram shows a nephron
Alex_Xolod [135]
I'm not sure what you mean by this but here is a diagram of a nephron!! Hope this helps?

4 0
2 years ago
Read 2 more answers
Lilah’s family has a large garden in their backyard. after learning about the role of organisms in an ecosystem, lilah compares
Katarina [22]

An ecosystem is a self supporting system in which there is a flow of materials and energy.

<h3>What is an ecosystem?</h3>

An ecosystem is a self supporting system in which there is a flow of materials and energy.

Let us now see the role of each organism in the small ecosystem.

  • flower - producer
  • butterfly - primary consumer
  • bird - secondary consumer
  • earthworm - decomposer

Learn more about ecosystem: brainly.com/question/13979184

8 0
2 years ago
Stereopsis is the ablility to associate music with vision TRUE OR FALSE
Scrat [10]
No, stereopsis is the perception of depth produced by the reception in the brain of visual stimuli from both eyes in combination. So it's false
6 0
3 years ago
Read 2 more answers
Other questions:
  • When a muscle is stretched by a contraction of the opposing muscles, it is called_______.
    8·2 answers
  • What time of year do monarch butterflies fly into the state of Connecticut?
    10·2 answers
  • What is the waste product of photosynthesis?
    15·1 answer
  • What is the small unit of matter that has characteristics properties of this element?
    5·1 answer
  • Differences between an artificial and a "normal" heart.
    12·1 answer
  • What kind of plants are likely to be pioneers species?
    5·1 answer
  • Which of the following is a relatively new disease? A. polio B. bird flu C. small pox D. tuberculosis
    7·1 answer
  • Simon and his friends are working on an experiment to determine the most common blood type group in California. Which of these m
    5·1 answer
  • Subject Course : Earth Science
    7·2 answers
  • Active transport requires energy and moves molecules from where there areless of them to where there are more of them.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!