Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 24.1, Problem 2CC
Is temporal isolation an example of a prezygotic or a postzygotic isolating mechanism?
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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?
O a) Frequency of the heterozygous genotype will increase.
b) Frequency of the homozygous genotypes will decrease.
O c) Frequency of the homozygous genotypes will increase.
O d) Both A and B
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Distinguish between prezygotic and postzygotic isolating mechanisms, and provide an example of each.
What is the difference between prezygotic and postzygotic reproductive isolating mechanisms? List some different types of each.
Chapter 24 Solutions
Biology
Ch. 24.1 - Can you think of another example of two different...Ch. 24.1 - Prob. 1CSCh. 24.1 - Is temporal isolation an example of a prezygotic...Ch. 24.1 - Prob. 3CCCh. 24.2 - Prob. 1CSCh. 24.2 - Prob. 1EQCh. 24.2 - Prob. 2EQCh. 24.2 - Prob. 3EQCh. 24.2 - Prob. 1CCCh. 24.2 - Prob. 2CC
Ch. 24.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 24.4 - Prob. 1CSCh. 24.4 - Prob. 2CCCh. 24 - Macroevolution refers to evolutionary changes that...Ch. 24 - Prob. 2TYCh. 24 - Prob. 3TYCh. 24 - Prob. 4TYCh. 24 - Prob. 5TYCh. 24 - Prob. 6TYCh. 24 - Prob. 7TYCh. 24 - Prob. 8TYCh. 24 - Prob. 9TYCh. 24 - Prob. 10TYCh. 24 - What is the key difference between prezygotic and...Ch. 24 - What are the key differences between gradualism...Ch. 24 - Prob. 3CQCh. 24 - Prob. 1COQCh. 24 - Discuss the type of speciation (allopatric or...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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 Barrow_forwardIf (positive) assortative mating increases in a population, what would expect to happen to genotype frequency over generations? O a) Frequency of the heterozygous genotype will increase. b) Frequency of the homozygous genotypes will decrease. O c) Frequency of the homozygous genotypes will increase. O d) There will be no change in genotype frequency.arrow_forwardExplain the Prezygotic Isolating Mechanisms ?arrow_forward
- Which of the following is NOT considered a genetic isolating mechanism? Question 2 options: a) Seasonal isolation b) Habitat preference c) Behavioral isolation d) A, B, and C are all genetic isolating mechanisms.arrow_forwardDecide whether each of the following scenarios would lead to prezygotic or postzygotic reproductive isolation: a) Dragonflies from two different populations have genitals that do not match, so they can't mate successfully [Select ] b) Two different species of fish have very different courtship displays, but they can mate and produce a non-fertile offspring [Select] c) One species of plant flowers in the winter, while another flowers in early spring [ Select ] d) The gametes of two tree species can fuse, but a zygote does not form [ Select ] e) A mountain range separates two populations of snakes I Select]arrow_forwardWhat is inbreeding depression and why is it particularly a concern for conservation biology? A) It is a chemical imbalance in the brain of animals forced into close quarters, such as those rescued from the wild and placed in zoos. B) It is a situation where the frequency of an allele over time depends greatly upon its initial frequency, as such if populations are too small, the present alleles are at risk of being lost. C) It is a situation where offspring of genetic relatives have increased fitness, this occurs when populations of animals are large and they mate freely. D) It is a situation where offspring of genetic relatives have reduced fitness, this occurs when populations of animals become too small and they are thus likely to mate with closely related individuals.arrow_forward
- Which type of selection is represented in a population of birds where a wing span of 2ft rather than 1ft or 3ft is more beneficial? Directional Disruptive Stabalizingarrow_forwardWhat are prezygotic and postzygotic barriers? Discuss the concept.arrow_forwardExplain the difference between Disruptive Selection & Directional Selection ?arrow_forward
- What affect will inbreeding tend to have on genotypic frequencies in a population? a) It will increase the frequency of genotypes that produce a dominant phenotype. b) It will decrease the frequency of genotypes that produce a dominant phenotype. c) It will increase the frequency of homozygous genotypes. d) It will increase the frequency of heterozygous genotypes.arrow_forwardWhat long-term effects can gene flow have on any two populations that are exchanging genes? View keyboard shortcutsarrow_forwardGive one example of how allele frequencies change from one generation to the next due to mutation, migration, genetic drift, nonrandom mating, and selection.arrow_forward
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