You are studying a potential case of incipient sympatric speciation involving two morphs of a cichlid fish in a crater lake that feed at different depths and differ in morphology. If true, which of the following statements would make sympatric speciation more likely (or at least possible)? i. The two morphs specialize on different food types; matings between the morphs produce offspring that are intermediate and can efficiently utilize both food types. ii. The two morphs feed on different food types, and there is strong disruptive selection operating such that individuals that are intermediate are very strongly selected against (basically none survive). iii. Mating occurs in the area of the lake where each morph feeds. Also, females choose males based on jaw morphology, preferring males that have the same jaw morphology as the female. iv. The two morphs feed at different depths, but both morphs come to a rocky area near the shore to mate. Females prefer to mate with males of the other morph. i, ii, iii, iv i, iv ii, iii ii, iii, iv i
You are studying a potential case of incipient sympatric speciation involving two morphs of a cichlid fish in a crater lake that feed at different depths and differ in morphology. If true, which of the following statements would make sympatric speciation more likely (or at least possible)? i. The two morphs specialize on different food types; matings between the morphs produce offspring that are intermediate and can efficiently utilize both food types. ii. The two morphs feed on different food types, and there is strong disruptive selection operating such that individuals that are intermediate are very strongly selected against (basically none survive). iii. Mating occurs in the area of the lake where each morph feeds. Also, females choose males based on jaw morphology, preferring males that have the same jaw morphology as the female. iv. The two morphs feed at different depths, but both morphs come to a rocky area near the shore to mate. Females prefer to mate with males of the other morph. i, ii, iii, iv i, iv ii, iii ii, iii, iv i
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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