<span>The answer would be: the regulation of biological cycles into regular, daily patterns
Circadian rhythm is not only related to the sleep pattern but also some of the other hormones that control the metabolisms like cortisol and melatonin. The rhythm also defines the body temperature fluctuation. The duration of the cycle should be around 24 hours which follow the duration of one day.</span>
A. send signals toward the central nervous system
In the outbreak of malaria, the frequency of the recessive allele for the HbS gene will increase. The correct option is A.
<h3>What is the HbS gene?</h3>
HbS is a beta-globin gene known as sickle hemoglobin.
It causes sickle cell disease in humans.
The disease is expressed by two HbS variants or one HbS variant or one another beta-globin gene.
Malaria is caused by the plasmodium parasite, which is present in the saliva of the mosquito.
Thus, the correct option is A, the frequency will increase.
Learn more about HbS gene
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Answer:
i rly dont know i just need points
Explanation:
pilot
I believe it is D. the genetic variations are in the phenotype of the organism. The reason why I say this is because the phenotype is the physically noticeable characteristics in an organism, this allows them to mutate differently and only the ones who are fit enough and have the best phenotypes will survive.