A.Hawaiian honeycreepers tend to have long and slender beaks to obtain the nectar of the flower better than those who have short and wide beaks. Type of selection: Possible reason: B.Small lizards have difficulties defending their territories, but large lizards are likely to be preyed upon by owls. Type of selection: Possible reason:
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- The protruding tusk on a narwhal is an enlarged tooth with sensory capabilities. Narwhals are related to other whales. The extreme phenotype of the tusk demonstrates which type of selection? A)Convergent B)Stabilizing C)DirectionalIn birds of paradise that populate tropical rainforest ecosystems, bright colored beaks and feathers are commonly found. These phenotypes continue to persist, even though brightly colored birds are more easily seen by predators. Which of the following would best describe the reason behind the persistence of these phenotypes in birds of paradise?(see image attached) a) In what ways are floral traits similar or different between hawkmoth and bat pollination syndromes b) In what ways are floral traits similar or different between bee and bat pollination syndromes c) Which pollinator shift is more likely to lead to reproductive isolation between populations that have the ancestral pollinator and populations that have bat pollinators? a) hawkmoth to bat b) bee to bat and why? / rationale
- An island of the Galápagos archipelago is home to a medium ground finch that subsists mainly by eating seeds. A severe drought struck the island. During the drought, plants produced fewer seeds, and the finches soon depleted the stock of small and soft seeds, leaving only large and hard seeds that were difficult to process. In this environment, finches with deeper beaks were more likely to survive and pass their advantageous traits to their offspring by means of the principle called the 'inheritance of acquired characteristics'. Question 11 options: A) True B) FalseYou are wandering in the Amazon rainforest, when you hear the loud call of an animal. You walk in the direction of the sound, and discover that it is coming from an adorable species of frog. a) What type of adaptation is being displayed by this species of frog? b) Describe how selection could work FOR and AGAINST this adaptation.You are a wildlife biologist researching black rhinos. During your time in Africa, you have observed two particular traits that allow some black rhinos to be better adapted to their environment. The first trait is an extra-long prehensile lip that enables the rhino to have more efficient browsing capabilities than rhinos with the usual size prehensile lip. Second, some of the rhinos in the study have extra-large ears that allow them to hear a potential predator earlier than rhinos with normal size ears. If you could breed black rhinos that have both of these good traits (an extra-long prehensile lip (P) and bigger ears (E), it wouldincrease their chance for survival in the wild. You have chosen the following two rhinos to enter into a breeding program for the two desired phenotypic traits. It has been determined (based on your previous research) that both the desired traits are homozygous recessive. Parent 1: Heterozygous dominant for prehensile lip trait. Heterozygous for the longer…
- A population of ducks had dull orange bills and an average size of 18 inches from bill to tail. Over time, some researches noticed that the average size of the ducks was still 18 inches, but that now many ducks were either much smaller or much larger and no ducks were actually 18 inches long. The researcher correctly identified that the ducks were undergoing ___A___ selection for size, The researcher also noticed that the bills were a much brighter orange in the ducks, and correctly identified ____B____ selection for bill colouration. A few years later, the researcher returned and noticed that only the male ducks now had bright orange bills and the females were less bright. The researcher hypothesized that ____C____ selection was occurring. Question 4 options: 123 Disruptive 123 Sexual 123 Directional 1. A 2. B 3. Ca) Which species is more closely related to the Gray wolf, the Maned Wolf or the jackal (or are they equally related)? b) Which species is more closely related to the jackal, the Maned wolf or the South American foxes (or are they equally related)?Which of the following is an example of a question about mechanism (not function)? A. What stimuli triggers a mother bird to feed her nestling? B. How does parental care benefit the mother's inclusive fitness? C. Why do some species have parental care but not others? D. Do mother birds get better at caring for their offspring over time?
- Mainland snakes primarily exhibit a striped phenotype (phenotype D) that camouflages them in the leaf litter of forest streams. On the other end of the hand, water snakes on living on the islands in Lake Erie exhibit more reduced striping (phenotypes B & C), with some individuals exhibiting a stripeless, gray color (phenotype A). The stripeless phenotype is considered to be adaptive on the islands, where snakes are primarily associated with large, monotonously colored slaps of rock. The data in the image shows data on the frequency of different phenotypes of two different mainland populations (Ontario and Peninsular mainland, Ohio) as well as three different island populations. How would you interpret the observed phenotype distributions in the context of the one-island model of migration?In Darwin’s finches, a. occurrence of wet and dry years preserves genetic variation for beak size. b. increasing beak size over time proves that beak size is inherited. c. large beak size is always favored. d. All of the choices are correct.What selection is exemplified by male birds of the same species having more colorful plumage than females?