ect the best answer for each question. All answers must be on the scantron. Only
ID: 194068 • Letter: E
Question
ect the best answer for each question. All answers must be on the scantron. Only scantron 27 questions; your score will be derived from the best 25. accepte ent with the idea of catastrophism? iapagos Islands from underwater seamounts over millions of years. B) The sudden demise oi the dinosaurs along with various other groups, by an impact of a huge extraterrestrial body with the Earth C) The gradual uplift of the Himalayas via the collision of the Australian crustal plate with the Eurasian crustal plate. D) The formation of the Grand Canyon by the Colorado River over millions of years. 2.) The British philosopher and economist E. F. Schumacher in his book A Guide for the Perplexed, (published in 1977) wrote that essential gaps exist between the existence of minerals, plants, animals and humans, such that each of these four classes of "existence" is marked by a "level of existence" not shared by those below. This idea most closely reflects ideas originally proposed by which of the following individuals? A) Lamarck B) Linnaeus C) Aristotle D) Plato 3.) Which of the following is the best example of a vestigial structure? A) Small wing-like structures (halteres) in male mosquitos used in mating B) An elongated finger in some mammals (such as aye-ayes) only helps them to capture their insect prey C) Small non-functioning legs of certain snakes (especially booids) that were functional in a recent ancestor D) Cone shaped teeth of certain lizards which were used for different types of prey in a recent ancestor than in extant lizards Texas longhorns, brown Swiss, and caracu from the now extinct aurochs, Bos taurus primigenius. Which of the following statements below correctly allows for this? the many cow "breeds" such as holsteins, herefords, ongoles A) Natural selection was rare among aurochs populations. B) Heritable variation was low in aurochs-otherwise this species would have different characteristics than cows. C) Among aurochs, most of the variation observed was due to differences in climate or possibly other aspects of the environment. D) Among aurochs, there was enough heritable variation to allow for these different "breeds" 5.) Which of the following is a likely fitness trade-off (compromise)? long anal fins (gonopodium) on male mosquito fish are attractive to females but these elongated fins can make it very difficult for the male fish to swim quickly and escape enemies. B) A special countercurrent exchange system allows bluefin tuna to maintain a body temperature 30-50 or more "C above the water temperature C) The strong, beak-like mouth of a green hump-head parro polyps within the reefs. D) The electric eel has three pairs of organs in its abdomen to allow it to generate electric charges, which it uses to stun prey tfish helps it bite off chunks of coral allowing it to get at the but it can also use the charges defensively 6.) A population of moths is in Hardy-Weinberg equilibrium with respect to a gene with two alleles, B and b. The frequency of the B allele is 0.6. What is the frequency of individuals that are homozygous for B allele? A) 0.16 B) 0.36 C) 0.40 D) 0.60 he amount of genetic variation in species found on newly formed, remote islands is mostly likely to be strongly constrained by A) population bottlenecks B) habitat differentiation C) the founder effect D) adaptive radiation rflower orchid (Dactylorhiza sambucina) normally show a 50/50 ratio of 8.) European populations of the alpine eld to yellow-flowered plants. When arrays of 50 plants with varying proportions of the two different color types are placed in differernt locations, it was found that pollinating bumblebees visit ed flowers of the minority color much more often, thereby removing their len masses more often. This was an indication of the plant's success in the male role, but the rarer colored form also showed higher pol fitness in the female role by receiving pollen more often and developing fruit at a greater frequency. Like many orchids, the alpine elderflower orchid does not recompe mass that is useless for feeding bumblebee larvae. This suggests that the bees learn to avoid non-rewarding flowers and they learn faster if the flower color is common. The above scenario seems to demonstrate an example of nse pollinators with any reward because it does not produce nectar and the pollen forms a solid A) frequency-dependent selection B) sexual selection C) stabilizing selection D) balancing selectionExplanation / Answer
Answer 7:- The correct option is C
As founder effect which follow the amount of genetic variations in species which are newly formed.
Answer 6:- The correct option is B
As the population is in hardy weinberg equilibrium which mean p2+q2+2pq= 1.
P2 O.6 = 0.36 which is homozygous allele B.
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