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
Marta_Voda [28]
3 years ago
11

How does the recesive sickle-cell allele stay in the gene pool

Biology
1 answer:
Zina [86]3 years ago
7 0

Answer:

Because natural selection selects for it. Thus it persists.

Explanation:

You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.

You might be interested in
During what developmental stage do archaeologists find widespread domestication, agriculture, ground stone tools, and ceramic po
kiruha [24]
The answer is Neolithic or the New Stone Age. The Neolithic period is known for the spread of agriculture, used of stone tools and also the time where the cereal cultivation for agriculture and animal domestication were introduce and lastly the appearance of pottery is also known as a symbol during this time.
7 0
3 years ago
Sometimes when a bee pollinates a flower, this action is beneficial to humans. Bees are the main pollinators of many plants that
r-ruslan [8.4K]

Answer: Ecosystem Services

Explanation: Simply put,Ecosystem services refer to all the benefits that man enjoys from his relationship with the ecosystem.Ecosystem services are the benefits that people obtain from ecosystems. Ecosystem services are indispensable to the wellbeing of all people, everywhere in the world. They include provision,regulation and cultural services that directly affect people, and supporting services needed to maintain the other services. From the availability of adequate food and water, to disease regulation of vectors, pests, and pathogens, human health and well-being depends on these services and conditions from the natural environment.

We depend on nature for our survival – without healthy ecosystems, our drinking water isn’t clean nor is the air we breathe. Studies also show that people who spend time in nature tend to be happier than those that don’t. Being outdoor can even act as a natural anti-depressant. With industry and urban sprawl expanding at unprecedented rates, Ecosystem Services attempt to translate the benefits we receive from nature into economic terms so we can better understand the compromise we are making between nature and industrial development.

3 0
3 years ago
What is the process of the ocean floor adds new material to its ocean floor called?
Leni [432]
Sea floor spreading. 
6 0
3 years ago
How is DNA used as evidence for evolution?
Zepler [3.9K]
I believe the answer is C.
6 0
3 years ago
Read 2 more answers
What refrigerant safety group classification has the highest flammability and the highest toxicity?
timama [110]

Answer;

-B3

Explanation;

Refrigerants are divided into two groups according to toxicity:

-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or  equal to 400 ppm;  and

-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.

They are also divided into three groups according to flammability:

-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101  kPa;

-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3  at 21°C and  101 kPa and a heat of combustion of less than 19 kJ/kg;

-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less  than or equal to 0.10 kg/m3  at 21°C and 101 kPa or a heat of combustion greater than or equal to 19  kJ/kg.

-Therefore; the answer for the above question would be Class B and class 3.

3 0
3 years ago
Read 2 more answers
Other questions:
  • You are trying to ventilate an​ 18-month-old baby who has stopped breathing. You have laid him down on a flat surface to ventila
    14·1 answer
  • Which of the following structures is only a part of male reproductive system in human?
    14·1 answer
  • An atom of element A has 15 protons. What would the element's atomic number be?
    5·1 answer
  • A nursing student is complaining about writing care plans. which response by the faculty is the best one to help the student see
    7·1 answer
  • What special cells and tissue do flatworms have in their excretory and nervous system​
    6·1 answer
  • Essential amino acids cannot be produced by the body, so they must come from our diet. We can get them from eating foods that co
    5·2 answers
  • . The Texas Horned Lizard has a blood shooting defense mechanism that shoots out
    8·1 answer
  • Explain how the distance between genes relates to the frequency of recombination
    15·1 answer
  • And here's another one againnn, help meeeee HUHUHU, I'm reallyyyyy exhausted rn (only for those who know the answer)
    12·1 answer
  • A poodle and a Labrador can mate and have a offspring.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!