<LCPO> BIOLOGY
12th Edition
ISBN: 9781266216398
Author: Raven
Publisher: MCG CUSTOM
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Chapter 21, Problem 3IQ
Summary Introduction
To determine: The consequence if within a population, both small and large individuals were allowed to breed, but the middle one was not.
Introduction: The civilization of humans has imposed various selections on the plants as well as animals, such as artificial selection. The artificial selection refers to the breeding of plants and animals and allowing them to pass the genes to their successive generation.
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Students have asked these similar questions
Could a set of invading genotypes with the “parachute” strategy take over a population that originally consists of only “jumpers without parachutes”? Or can populations of 100% individuals that sacrifice their fitness to benefit non-relatives outcompete a population of individuals who only sacrifice fitness to benefit their kin? Give a reason for your answer.
In a population of 500 individuals, 70% are homozygous dominant for the A allele. What percentage of the population is heterozygous for the A allele?
a) 10%
b) 20%
c) 30%
d) 40%
Negative assortative mating means that organisms choose mates that are different
from themselves. If negative assortive mating occurs in a population, what would
expect to happen to genotype frequency over generations?
a) Frequency of the heterozygous genotype will increase.
b) Frequency of the homozygous genotypes will decrease.
c) Frequency of the homozygous genotypes will increase.
O d) Both A and B
Chapter 21 Solutions
<LCPO> BIOLOGY
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.2 - Prob. 1LOCh. 21.2 - Distinguish between demonstrating that evolution...Ch. 21.3 - Contrast the processes of artificial and natural...Ch. 21.3 - Prob. 2LOCh. 21.4 - Prob. 1LOCh. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.5 - Explain the evolutionary significance of...
Ch. 21.5 - Prob. 2LOCh. 21.6 - Prob. 1LOCh. 21.6 - Prob. 2LOCh. 21.7 - Characterize the criticisms of evolutionary theory...Ch. 21.7 - Prob. 2LOCh. 21 - Suppose that a male with a beak depth of 10 mm...Ch. 21 - Prob. 1IQCh. 21 - Prob. 2IQCh. 21 - Prob. 3IQCh. 21 - Why might the evolutionary line leading to...Ch. 21 - Artificial selection is different from natural...Ch. 21 - Gaps in the fossil record a. demonstrate our...Ch. 21 - The evolution of modern horses (Equus) is best...Ch. 21 - Homologous structures a. are structures in two or...Ch. 21 - Convergent evolution a. is an example of...Ch. 21 - Prob. 6UCh. 21 - The possession of fine fur in 5-month human...Ch. 21 - In Darwins finches, a. occurrence of wet and dry...Ch. 21 - Prob. 2ACh. 21 - Convergent evolution is often seen among species...Ch. 21 - What conditions are necessary for evolution by...Ch. 21 - Explain how data shown in figure 21.2a and b...Ch. 21 - Prob. 3SCh. 21 - Refer to figure 21.5, artificial selection in the...Ch. 21 - The ancestor of horses was a small, many-toed...
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- A situation in which hybrids are less successful (lower fitness) than individuals from either parent population will lead to which type of situation?arrow_forwardWhy is genetic variability necessary in a population? What can happen if genetic variability is reduced?arrow_forwardWithin a population of butterflies, the color brown (B) is dominant over the color white (b) and 40% of all butterflies are white. Given this information and HWE calculate the following: a) The percentage of butterflies in the population that are heterozygous. b) The frequency of homozygous dominant individuals.arrow_forward
- You are studying gene Q/q in two populations of great white sharks. In one population most individuals have genotype QQ, and in the other population most individuals have the genotype qq. If there is some migration from each population into the other, how will this affect genotype frequencies?arrow_forwardIn the Paraguayan Easter Atlantic Forest, a mating between a homozygous black yaguarundi and a homozygous blond yaguarundi will produce all brown yaguarundi offspring. When these brown F₁ yaguarundies are mated, their offspring consists of 2 white, 31 black, 154 brown, and 17 blond yaguarundies. A) Name what genetic interaction or ratio (depending on the ratio expected) may be occurring in this population? B) What are the observed and expec phenotypic ratios for these F2 progeny? C) Use a Chi-squared analysis to test your hypothesis (set a = 0.05). Be sure to report all values used in your comparisons (p-values, critical values, alpha value, df, etc), your hypothesis, and show your work.arrow_forwardA population consists of 7 mice. For the coat color trait, there are only two alleles: brown (B) and white (b). BB and Bb mice are brown; bb mice are white. In the population's gene pool, there are 7 white alleles (b). a) What is the frequency of the brown allele in the population? Select) b) What do you predict the frequency of the bb genotype will be in the next generation if no evolution takes place in the population? I Select | c) The mice live on dark black, volcanic rocks in the Arizona desert and two hawks are introduced into the area as part of wildlife rehabilitation program. You sample the mouse population after the hawk reintroduction and find the following numbers: 24 BB mice, 52 Bb mice, 24 bb mice. Has natural selection by the hawks caused the population to evolve significantly? I Select]arrow_forward
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