Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Which of the following is written in a way that is MOST ACCURATE? (the others have inaccurate wording)
Group of answer choices
Spiders with the stickiest silk caught more food, passing on the trait to many babies until super sticky silk became the norm in the population.
One mutant moose had taller legs, crashing through brush and snow more efficiently and so it became the norm in the population.
A population of giraffes evolved taller necks in order to reach higher leaves.
As the predators got smarter, rabbits learned to hide in burrows and passed what they learned to their offspring.
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- A small population of birds lived on an island. They were all the same species and ate a large variety of foods. This population had a lot of variation in beak size and shape. Over time, the population of finches grew pretty large. Some individuals in the population had slightly longer and thinner beaks. These individuals could forage for insects in the holes in trees in ways that the others in the population couldn't. They left more offspring that had that trait and over time, created a new species that foraged exclusively on insects in trees. This process is called: speciation. endemicism. All of the answers are correct. acclimatization.arrow_forwardEnvironment: Polluted Forest Moths Released G1 G2 G3 G4 G5 Typica 810 327 303 169 103 59 Carbonaria 190 240 486 693 974 1407 Total 1000 567 789 862 1077 1466 Phenotype Frequency Color Initial Frequency Frequency G5 Typica w 0.81 Carbonaria b 0.19 Allele Frequency Allele Initial Allele Frequency G5 Allele Frequency q d 0.90 p D 0.10 Genotype Frequency Moths Genotype Color Moths Released Initial Frequency Frequency G5 Number of Moths G5 q2 typica dd w 810 0.81 2pq carbonaria Dd b 180 0.18 p2 carbonaria DD b 10 0.01arrow_forwardThe next five questions (questions 11-15) are related to each other. Read all of the scenarios very carefully and in order and select the correct answer. A population of 10,000 blue grasshoppers lives on an island. Most members of the population live among the grasses because they are not very good climbers. Some grasshoppers live in the trees because they are good climbers. One year, a short-legged mouse arrived at the island and ate all grasshoppers within its reach, thus totally wiping out the grasshoppers living in the grasses. Luckily, those grasshoppers that were good climbers were spared. This story is an example of Gene Flow Founder Effect C Natural Selection Genetic Driftarrow_forward
- Imagine you were to collect data from simulation 2 (negative selective pressure on SS genotypes) over five generations. The frequency of the S allele over time is graphed below. The graph shows a rapid decrease in the sickle cell allele frequency in the first generation but a slower decrease in later generations. By the fifth generation, the allele is not completely eliminated from the population. Provide two plausible explanations for why the S allele persists after five generations.arrow_forwardI need help with this questionarrow_forwardWhy would you not want to harvest to a point where salmon populations are kept at very low numbers? Select true or false for each answer. small populations [ Choose ] are more likely to go extinct do to unforeseen (stochastic) events small populations [ Choose ] are more likely to lose genetic diversity small populations Choose ] are more susceptible to inbreeding depression small populations [ Choose ] are not growing very quickly so you would have low fishing yieldsarrow_forward
- You have sequenced the Rag1 gene in two populations of snails that vary in the amount of parasites. The Rag1 gene codes for proteins that affect the immune system. The results were analyzed looking for synonymous and nonsynonymous substitutions and are in the table below. Determine if the populations are under selection and comment on which population has the higher infection of parasites. Population 1 Population 2 Synonymous 5 6 Nonsynonymous 4 13arrow_forwardIn the study of genetics, a model organism is one in which hypotheses can be tested and the results are usually true of most other organisms. For examining heredity and how different alleles affect traits in a population, a good model organism is one that has a short generation time and many offspring O is most like a wild population has only a few offspring that can be studied extensively most resembles humansarrow_forward
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