Minotaurs are only found in the Labyrinth on the island of Crete. The area is fa
ID: 3475922 • Letter: M
Question
Minotaurs are only found in the Labyrinth on the island of Crete. The area is famous for its annual spectacle of “Minotaur run," where herds of Minotaurs rush out of the Labyrinth to reach their breeding grounds on the beautiful Aegean seashore. A group of Olympian scientists discovered that the horn size of the Minotaur is controlled by a single locus, with BB individuals having the longest, the Bb the medium, and bb the shortest horns. It is further found that the long-horned individuals tend to be tangled up along the way during annual migration out of the Labyrinth, such that only 80% of the BB individuals can make it out of the Labyrinth successfully. Once outside the Labyrinth, the short-horned individuals tend to be less successful at finding preys, thus 40% would die from starvation before the breeding season. Initially, the annul migration of Minotaur started out with 1,000 individuals (300 BB, 400 Bb, and 300 bb) inside the Labyrinth. Given the information above, please answer Questions 11 to 14. What is the heterozygosity of the Minotaur population while still inside the Labyrinth? (A)0.25 (B)0.30 (C) 0.40 (D)0.50 (E)None of the above 11. 12. What is the average survival rate for the Minotaur at the time of the breeding season? (A)0.60 (B)0.75 (C)0.80 (D) 0.82 (E)None of the above 13. What would be the B allele frequency during the breeding season? (A)0.33 (B)0.41 (C) 0.47 (D) 0.54 (E)None of the above is correct. 14. Which of the following statements is correct? (A)Given long enough time, there would always be horn-length polymorphism in the Minotaur population. (B)Given long enough time, the B and b allele frequencies would not change with time any more (C)The is an example of heterozygote advantage, or overdominance. (D)All of the above are correct. (E)None of the above is correct.Explanation / Answer
11 ) C ( A diploid organism is heterozygousat a gene locus when its cells contain two different alleles of a gene.)
12 ) D
13 ) D
14 ) D