Using the same information from the previous question, answer the following ques

Question

Using the same information from the previous question, answer the following question. What is a way that the population of Tasmanian devils can prevent themselves from the possibility of going extinct? a. Some devils will develop resistance to the disease the longer they are exposed to it. b. Some devils will team to live in places where the infection is not present c. Since the devils need to adapt they will figure out a way to light the disease. d. None of the above. Antibacterial soaps are extremely popular. As a matter of fact it is very hard to find liquid soap that does not contain antibacterial chemicals. Why is the use of antibacterial soap potentially dangerous? a. They change the genetic make-up of the population by increasing the proportion of bacteria resistant to antibacterial chemicals. b. They change the genetic make-up of the population by decreasing all the different genetic varieties of bacteria c. They increase the chance that the population of bacteria learns to adapt to the antibacterial chemical d. The bacteria will need to adapt to the antibacterial chemical. We will therefore have to make new ones. Which of the following conditions will NOT maintain a population in Hardy-Weinberg equilibrium? a. The population is very large. b. There is no gene flow. c. Mutations do not alter the gene pool. d. there is natural selection. Northern elephant seals were hunted by humans in the 1890'$ to the point that its population was reduced to as few as 20 individuals. Since then their population has rebounded to more than 30.000 a number that is similar to a population of southern elephant seals who were NOT hunted by humans. Which of the following statements is likely true? a. (Genetic drift occurred in the northern elephant seal population. b. A bottleneck effect occurred in the southern elephant seal population. c. More genetic variation is observed in the northern elephant seal than the southern elephant seal population d. The frequency of alleles in the northern seal elephant seal population is more stable than the frequency of alleles in the southern elephant seal population. What determines an organism's fitness? a. Its genetic variation from other individuals in the population/b. Its ability to survive changes in the environment c. Its lifespan. d. Its ability to reproduce viable offspring. What type of selection typically occurs when environmental conditions vary in a way that favours both extremes of a phenotypic range? a. Stabilizing b. Directional c. Disruptive. d. Random

Explanation / Answer

10.The correct answer is:a. Genetic drift occurred in the northern elephant seal population.

Reason:Genetic drift and bottle neck effect caused the population size to become reduced first but as bottleneck effect does not exist for many generations, the population rebounded again to 30,000.

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