There are two groups of pine trees that appear to be

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Introduction to Statistics and Data Analysis
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Chapter 10 / Exercise 10.80
Introduction to Statistics and Data Analysis
Olsen/Peck
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11.There are two groups of pine trees that appear to be very similar phenotypically and genotypically. However, one releases pollen in January, when the female structures of that group are receptive, and one in March. What kind of reproductive barrier is this? (Concept 24.1) A.temporal isolation B.gametic isolation C.mechanical isolation D.hybrid inviability E.a geographic barrier Correct. Temporal isolation occurs when two similar species have sexual readiness at different times.--------------------------------------------------------------------------------------------------------------------------------------------------------
12.The biological species concept emphasizes _____. (Concept 24.1)
13.Lake Victoria, in Africa, is home to a group of related fishes known as cichlids. Many of these fishes are similar in appearance but have different feeding habits. What is the best method for scientists to determine conclusively whether the fish are members of a population that has a lot of variation or members of entirely different species? (Concept 24.1)
14.In practice, how do scientists distinguish most species? (Concept 24.1)
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Introduction to Statistics and Data Analysis
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Chapter 10 / Exercise 10.80
Introduction to Statistics and Data Analysis
Olsen/Peck
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