Dr. Kitty Hauke is studying lobsters in Maine. She noticed that over several yea
ID: 181700 • Letter: D
Question
Dr. Kitty Hauke is studying lobsters in Maine. She noticed that over several years the average length of pincers had increased within this population. She hypothesized that having larger pincers provided a fitness advantage. To test her hypothesis, she introduced 75 large pincer lobsters and 75 small pincer lobsters into an isolated bay area that was similar to the lobsters’ natural sea environment. Over 10 years, Dr. Hauke observed this isolated population of lobsters. What would she likely observe if her hypothesis was incorrect?
The percent of lobsters with large pincers would decrease.
There were fewer small pincer lobsters mating during mating season.
More large pincer lobsters could be found mating during mating season.
The percent of lobsters with large pincers would increase.
Microevolution is to population as macroevolution is to __________.
Individuals
Communities
Biodiversity
Species
Active transport requires energy in order to move molecules ____________ the concentration gradient while simple and facilitated diffusion require no energy to move molecules __________ the concentration gradient.
Along ; against
Along ; along
Against ; along
Against ; against
Explanation / Answer
Ques-1: answer: The percent of lobsters with large pincers would decrease.
Reason:
The percent of lobsters with large pincers would not decrease because, as per "natural selection" & environmental effects on the any species, will lead to acquiring of "environmentally favorable traits" result in generation of higher fitness. In the above, case, lobsters with large pincers were observed large pincers as a result greater fitness was observed. Therefore, higher percent of lobsters with large pincers during mating could be observed & fewer small pincer lobsters mating during mating season. The percent of lobsters with large pincers would increase. The hypothesis is incorrect, if the percent of lobsters with large pincers would decreased.
Ques-2: Active transport requires energy in order to move molecules ____________ the concentration gradient while simple and facilitated diffusion require no energy to move molecules __________ the concentration gradient.
Answer: Against ; along & against
Reason: Faciliated diffsuion move molecules across the cells with and against a concentration gradient but simple diffusion is going to move molecules along the concentration gradient
Ques-3:
Microevolution is to population as macroevolution is to __________.
Communities
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