The frequency of the recessive allele for the Hbs gene when there is an outbreak of malaria will increase.
The sickle hemoglobin is produced by the HbS gene, a variation of the B-globin gene. A person who possesses two recessive alleles is said to have the genetic condition known as sickle cell anemia.
People who are heterozygous have the advantage of having normal and sickle hemoglobin, so they are more resistant to malaria because malaria will only act on normal hemoglobin, increasing the prevalence of the recessive allele of the HbS gene.
However, the malarial parasite only affects hemoglobin which is normal, making heterozygous people more resistant to the disease. Hence, the frequency of the recessive allele for the Hbs gene when there is an outbreak of malaria will increase.
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Answer: somatoform or somatic symptom disorder
Explanation:
It is any mental or psychological disorders where patients experience unexplained physical symptoms of illness which are idiopathic and not consistent with general medical guidelines.
Symptoms These depend on the age group of individuals , it usually begins as reoccurring stomachaches, followed by headache in early childhood. As age increases, the symptoms changed to insomnia, fatigues, depression and at chronic state seizure, and paralysis,
Answer:
<em> Plants mostly acquire carbon present in the atmosphere. ... Carbon is also removed by conversion of reduced carbon to organic tissues or carbonates to hard body parts.</em>
<h2>Answer is option "D"</h2>
Explanation:
- The continuous procedure was single-arrange chemostat development without distribution, henceforth the procedure is persistently taken care of with the development medium and the way of life stock is pulled back at a similar rate so as to keep up the bioreactor volume steady
- Chemostats have for some time been another supported stage for exploratory advancement, and were, truth be told, developed for this application. A chemostat is a development vessel into which a crisp medium is conveyed at a steady rate and cells and spent medium flood at that equivalent rate. In this way, the way of life is compelled to gap to stay aware of the weakening, and the framework exists in a steady-state where information sources coordinate yields
- Hence, the right answer is option D "a chemostat using a low-nutrient medium"
Answer:
The correct answer is: Clostridium Tetani.
Explanation:
Clostridium tetani is a Gram-positive bacteria found in soil.
<u>C. tetani may grow and generate </u><u>tetanospasmin</u><u>, a powerful toxin that interferes with </u><u>motor neurons</u><u>, producing </u><u>tetanus</u><u>, if introduced into a </u><u>wound</u>.
Tetanospasmin travels throughout the body via the lymphatic and bloodstream, where it is taken up by different sections of the nervous system. Tetanospasmin inhibits the release of the inhibitory neurotransmitters glycine and gamma-aminobutyric acid at motor nerve terminals in the nervous system. <u>This blockage causes </u><u>extensive motor neuron activation and muscular spasming</u>. These muscle spasms usually start at the top of the body and work their way down, starting about 8 days after infection with lockjaw and progressing to spasms of the stomach muscles and extremities. The muscle spasms last several weeks.
Tetanus toxoid vaccinations, which are often given to children around the world, can inhibit the toxin's activity.
