A species of butterfly shows variation in the length of the antennae. You measure antennae in a butterfly population and find the mean to be 15 mm. You calculate a heritability of antennae length to be 1 (h? = 1). That summer, there is a severe drought. Many of the butterflies die and only a few survive to reproduce. The surviving butterflies have a mean antennae length of 17 mm. a) What is the predicted mean limb-length of the offspring of the surviving butterflies? [ Select ] b) What type of selection was acting on antennae length in these butterflies? [ Select ] c) Five years later, you go back and measure antennae length in this butterfly population again. Every butterfly in the population has antennae measuring 16 mm. What is the heritability of antennae length in this population now? [ Select ]

Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter44: Population Ecology
Section: Chapter Questions
Problem 1SQ: Most commonly, individuals of a population show a _______ distribution within their habitat. a....
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A species of butterfly shows variation in the length of the antennae. You measure antennae in a
butterfly population and find the mean to be 15 mm. You calculate a heritability of antennae length to
be 1 (h2 = 1).
%3D
That summer, there is a severe drought. Many of the butterflies die and only a few survive to
reproduce. The surviving butterflies have a mean antennae length of 17 mm.
a) What is the predicted mean limb-length of the offspring of the surviving butterflies?
[ Select ]
b) What type of selection was acting on antennae length in these butterflies?
[ Select ]
c) Five years later, you go back and measure antennae length in this butterfly population again. Every
butterfly in the population has antennae measuring 16 mm. What is the heritability of antennae length
in this population now? [Select ]
Transcribed Image Text:A species of butterfly shows variation in the length of the antennae. You measure antennae in a butterfly population and find the mean to be 15 mm. You calculate a heritability of antennae length to be 1 (h2 = 1). %3D That summer, there is a severe drought. Many of the butterflies die and only a few survive to reproduce. The surviving butterflies have a mean antennae length of 17 mm. a) What is the predicted mean limb-length of the offspring of the surviving butterflies? [ Select ] b) What type of selection was acting on antennae length in these butterflies? [ Select ] c) Five years later, you go back and measure antennae length in this butterfly population again. Every butterfly in the population has antennae measuring 16 mm. What is the heritability of antennae length in this population now? [Select ]
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