Chemistry, 30.09.2019 23:00, lbelle

Aspecies that has experienced a severe bottleneck event would be expected to
a. be better able to adapt to changing environmental pressures
b. have few instances of inbreeding
c. be more susceptible to disease and famine
d. retain significant genetic diversity

Answers: 2

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I think the correct answer among the choices listed above is option A. A species that has experienced a severe bottleneck event would be expected to be better able to adapt to changing environmental pressures because this species is used to the changes and should able to survive.

answered: Robyn32

Answer;

C. be more susceptible to disease and famine

Explanation;Bottleneck effect is an occurrence or an event in evolution that takes place when there is a drastic lowering of a population to a very small number that can not represent the genetic make up of the original population.When this event occurs only a few individuals in a population survive to pass the number of genes to the new population.Therefore, individual organisms in a population are susceptible to disease and famine.However, bottleneck effect has an effect of increasing genetic drift and also increasing inbreeding due to the reduced pool of possible mates.

answered: Guest

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh $pcl_{3}$ +δh $cl_{2}$ ] - [δh $pcl_{5}$ ]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

answered: Guest

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that 0.249 or 0.25 grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

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Aspecies that has experienced a severe bottleneck event would be expected to
a. be better abl...