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
Alexus [3.1K]
3 years ago
15

1. Please describe what sickle-cell disease is and why areas where malaria is common have high frequencies of the sickle-cell al

lele.
2. How have human cultural practices influenced patterns of disease seen today? Explain the biocultural phenomena with as many examples as you can.
Biology
2 answers:
satela [25.4K]3 years ago
7 0

Explanation:

iccif8fucuvudypetiskufi

gifififo

big86fif6fy8fufuct7ctcucycudt7c7

icang [17]3 years ago
5 0

Answer:

Explanation:

Sickle-Cell Disease- An inherited blood disorder where red blood cells become sickle/crescent shaped. It is when the body produces red blood cells that are unstable!

As for why areas where malaria is common have high frequencies of the sickle-cell allele, It is believed by some as an example of natural selection at play. An interesting pattern of incidence of sickle cell has been observed in Africa, where malaria is a widely prevalent disease. The relation between sickle cell and anemia gains further ground on the fact, that there is a greater incidence of sickle cell in the African lowland populations, where malaria is severe and widespread than among their highland counterparts. It is believed that sickle cell provides resistance against the malarial parasite.  

(I hope that answers question 1)

You might be interested in
Explain how the resting potential is created and maintained. (sodium potassium pump) What happens when sodium comes in and potas
MAVERICK [17]

Answer:

The resting membrane potential is created and maintained due to the difference in the total charge or ions present outside and inside of the cell. The resting membrane potential depolarize if sodium come in and and potassium leaves the cell.

Explanation:

The resting membrane is maintained and created by the distribution of potassium and sodium ions. The membrane potential of a resting cell is -70mV (negative) because more sodium ions is present outside the cell than the potassium ions present inside the cell.

When the sodium ions enter inside the cell and potassium ions move outside the cell, the inside of the cell becomes more positive as compared to the outside and the membrane potential changes from -70 mV to +30 mV. The cells will depolarize due to the accumulation of sodium ions inside the cell.

7 0
3 years ago
Helpppppp thank you any help will do
madam [21]

Answer: B

Explanation:

3 0
3 years ago
Which condition would most likely lead to an increase in the frequency of an altruistic behavior in a population?.
podryga [215]

The beneficiaries of the behavior are related to the individual performing it. Groups that differ in terms of altruistic and selfish genotypes have differential reproduction or survival.

<h3>What is Altruistic behavior ?</h3><h3 />

Altruism is the practise of acting in a way that benefits another person at the expense of oneself. Giving someone else your lunch, for instance, is altruistic since it satisfies their need while also leaving you hungry.

Nepotistic altruism, reciprocal altruism (or mutualism), group-based altruism, and moral altruism are the four categories of altruism.

  • Along with cortical areas like the medial prefrontal cortex and the temporoparietal junction, the desire to act altruistically is linked to higher activity in limbic areas like the nucleus accumbens and anterior cingulate cortex.

Learn more about Altruistic behavior here:

brainly.com/question/11287458

#SPJ4

6 0
1 year ago
How long does it take energy from the center of the sun to reach the surface ?
Dennis_Churaev [7]

Answer:

100,000 years

Explanation:

A photon of light takes only eight minutes to get to the Earth from the surface of the Sun. But it can take 100,000 years from the core of the Sun to get to the surface. Where it bursts out and flies at the speed of light.

8 0
3 years ago
Read 2 more answers
The nurse is preparing to administer a trivalent influenza vaccine (tiv) to a 70-year-old patient with chronic obstructive pulmo
ivanzaharov [21]
The nurse should provide TIV and then recommend to get a moment PPV23. Proof that a moment PPV23 is useful for forestalling pneumonia in patients with unending lung infection if over 5 years have gone since the underlying PPV23. The medical caretaker ought to propose this to the patient or the supplier. Directing the TIV and reminding the patient to get this yearly is right, yet the medical caretaker ought to suggest a moment PPV23 since this patient meets criteria for this sponsor. All patients more than 50 years and those with incessant lung sickness ought to get this season's cold virus antibody every year. Patients more than 50 years old can't get the live infection immunization.
7 0
3 years ago
Other questions:
  • When a motor neuron and the skeletal muscle cell it innervates are at rest:?
    9·1 answer
  • Cystic fibrosis is controlled by recessive alleles(cc). if two parents without cystic fibrosis have a child with cystic fibrosis
    6·1 answer
  • How is sunlight used in photosynthesis
    14·2 answers
  • If you see an interesting building or car you admire, you should:
    12·2 answers
  • Why were the rocks on the river bed smooth?
    8·2 answers
  • Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the
    11·1 answer
  • Why is osmosis important to the survival of a cell
    10·2 answers
  • Eukaryotes and prokaryotes are the two main types of cells.
    10·1 answer
  • What is the name of this chemical reaction?
    9·1 answer
  • If a strand of dna of sequence 5'-tggacctagacc-3' is replicated, what is the newly synthesized dna strand?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!