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
uranmaximum [27]
2 years ago
5

To infect T cells, M-tropic human immunodeficiency virus-1 (HIV-1) strains bind to the cell surface protein CCR5, which is norma

lly a receptor for various immunity-related factors. About 10 percent of Scandinavians are heterozygous for a CCR5 allele with a 32-base-pair deletion that introduces a premature stop codon, thereby creating a protein that binds neither factors nor virus. Heterozygous individuals exhibit some resistance to M-tropic HIV-1 infection, and homozygous individuals are very resistant to infection. In the case of HIV-1, this _______ mutation has proven to be _______.
Health
1 answer:
inysia [295]2 years ago
6 0

Answer:

In the case of HIV-1, this loss-of-function mutation has proven to be beneficial.

Explanation:

Loss-of-function mutations are those that result in a gene product that has less or no function compared to the unmutated gene. When the allele completely loses function, (null allele), it is called an amorphous mutation. Phenotypes associated with these mutations are usually recessive, except when the organism is haploid, or when the reduced dosage of the normal gene is not sufficient to produce a normal phenotype (this phenomenon is called haploinsufficiency).

As mentioned earlier, this type of mutation results in a defective gene, but the text shown in the above question shows an example of a beneficial loss-of-function mutation because this mutation provides resistance to HIV-1 infection.

You might be interested in
An individual who has reached full physical growth and maturity is ready for a child.
SSSSS [86.1K]
This question/or statements should be false. Because when someone had been reached to full physical growth and it not maturity is ready for their child.
Hope it helped you.
-Charlie
7 0
3 years ago
The "treatment" considered the most effective against current day health threats is
77julia77 [94]
<span>The "treatment" considered the most effective against current day health threats is :

b. prevention.
</span>
5 0
3 years ago
How a healthy body is link to a healthy mind and soul?
Nat2105 [25]

Answer:

In other words, our minds can affect how healthy our bodies are! On the other hand, what we do with our physical body (what we eat, how much we exercise, even our posture) can impact our mental state (again positively or negatively). This results in a complex interrelationship between our minds and bodies.

4 0
2 years ago
Read 2 more answers
which of these is an uncontrollable risk factors for disease? A. Nutrition B. Insect bites C. Hygiene D. Poverty
Pepsi [2]
I would say nutrition
5 0
3 years ago
Read 2 more answers
17. If a case manager at the mental heath center determines that a newly referred
shtirl [24]
C See seek to the individual to commit to treatment
7 0
3 years ago
Other questions:
  • Describe a time when failure has led to your success.
    5·2 answers
  • Which of the following requires the action of a first class lever in the body
    7·1 answer
  • PLEASSE HELP:
    7·2 answers
  • Betty is a professional high diver and takes a vacation to a beach she has not visited before. While there, she notices a tall c
    13·2 answers
  • ASAP MULTIPLE CHOICE
    8·2 answers
  • Giselle insists on snacking on chips and a soft drink when watching television just before supper. Because of snacking, Giselle
    13·2 answers
  • A 2-year-old girl has had repeated ear and upper respiratory infections since she was born. A pediatrician has determined a diag
    5·1 answer
  • Nadia auditioned for a part in a school play but didn't get it. She feels scared about auditioning for another play. What should
    10·1 answer
  • Eating food provides enough fuel for your body to live for only one day.<br><br> True<br> False
    14·2 answers
  • Cell test be like: Thank you for helping!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!