What will happen to the frequency of the recessive allele for the hbs gene when there is an outbreak of malaria?

The answer to the question: What will happen to the frequency of the recessive allele for the HbS gene when there is an outbreak of Malaria? is, that especially in regions where Malaria is a norm, like Africa, people tend to express their HbS gene, typical of sickle cell anemia, and which protects them  from malaria, more, than those who have not been exposed to it.

Explanation:

Malaria is a parasitic infection of the red blood cells that can be lethal depending on who is infected and his/her genetic characteristics. Especially depending on whether a person´s blood cells present heterozygote characteristics or homozygous ones, and the structure of their HbS, these cells will act differently when confronted by a parasite like malaria, and the body will be able to effectively respond to the infection, or not, at all. In people who historically have been constantly faced by the exposure to malaria, it is more common to find that the expression of the recessive allele HbS increases, protecting them from dying of malaria.

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answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.