6. 6. In a hypothetical environment, fishes called pike-cichlids are visual pred

Question

6. 6. In a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish lin other words, they locate their prey by sight). If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following is least likely to be observed in the algae-eater population over generations? the course of many A) selection for algae-caters that are faster swimmers B) selection for drab coloration of the algae-eaters G) selection for nocturnal algae-eaters (active only at night) D) selection for algae-caters that become sexuall F) selection for larger female algae-eaters, bearing broods composed mature at smaller overall body sizes of more, and larger young About 13 different species of finches inhabit the Galápagos Islands today, all descendants of a common a ancestor from the South American mainland that arrived a few million years ago. Genetically, there are four distinct lineages, but species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was finch (genus Certhides Next to diverge was the vegetarian finch (genus Camarhynckus), followed by five tree finch species also in genus Cemarhymchus) and six ground finch speckes (genus Geospiza) 7. If the six ground finch species have evolved most recently, then which of these is the most7 logical prediction? A) The chances of hybridization between two ground finch species should be less than the B) Their genomes should be more similar to each other than are the C) They should share fewer anatomical homologies with each other than they share with chances of hybridization between two tree finch species. finch species. the tree finches. of the five tree D) They should be limited to the six islands that most recently emerged from the sea. 8. Which of the four postulates of Darwin's theory of evolution was not well established when 8 On the Origin of Species was first published but is overwhelmingly supported today? A) Individuals with advantageous traits survive longest and have the most offspring. B) Some individuals in a population survive and reproduce better than other individuals. C) Some differences among individuals in a population are due to genetics and are heritable. D) Individuals in a population differ physically from one another in many ways. 9Charles Darwin was the first person to propose 9. A) that evolution occurs. B) a mechanism for how evolution occurs. C) that Earth is older than a few thousand years D) that population growth can outpace the growth of food resources E) a mechanism for evolution that was supported by evidence.

Explanation / Answer

6)B the algae eaters are predated by pike cichild from their color.Algae eaters must be the bottom dwellers,so when their predator hunts the light colored are easily noticable as tat the bottom sunlight is less. When the predation pressure increases the light colored get caught easily and the dark colored algae eaters get benefited and they get selected.

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