A population.of hermit crabs finds discarded shells from other animals and wears the shells as protection. As the crabs grow, they must find larger shells. However, the crabs' bodies are angled either left or right and they can only use shells with openings to accommodate their body opening. A left-angled crab can only use a shell with a right-facing opening. A right-angled crab can only use a shell with a left-facing opening. There are a limited number of shells available in the environment and crab incapable of finding a new shell face a much greater risk of predation. During the first observation period, the majority of crabs in the population are right-angled. Select the best explanation for likely changes over time. Since most crabs are right-angled, this suggests this characteristic is beneficial in the environment. Thus, right-angled will likely continue to be the most common phenotype. The proportion of right- and left-angled crabs will vary mostly as a function of random changes due to genetic drift. The relative fitness of the right-angled crabs will decrease and left-angled crabs will begin to be more common in the population. Since we can't predict gene flow, we cannot make a prediction.

A population.of hermit crabs finds discarded shells from other animals and wears the shells as protection. As the crabs grow, they must find larger shells. However, the crabs' bodies are angled either left or right and they can only use shells with openings to accommodate their body opening. A left-angled crab can only use a shell with a right-facing opening. A right-angled crab can only use a shell with a left-facing opening. There are a limited number of shells available in the environment and crab incapable of finding a new shell face a much greater risk of predation. During the first observation period, the majority of crabs in the population are right-angled. Select the best explanation for likely changes over time. Since most crabs are right-angled, this suggests this characteristic is beneficial in the environment. Thus, right-angled will likely continue to be the most common phenotype. The proportion of right- and left-angled crabs will vary mostly as a function of random changes due to genetic drift. The relative fitness of the right-angled crabs will decrease and left-angled crabs will begin to be more common in the population. Since we can't predict gene flow, we cannot make a prediction.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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