Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 22, Problem 13PDQ
Under what circumstances might a lethal dominant allele persist in a population?
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Under what circumstances might a lethal dominant allele persistin a population?
Why do recessive lethals persist in a population? Provide an example of a recessive lethal allele.
How is it possible that a lethal recessive gene can be maintained in a population? Give an example.
Chapter 22 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 22 - CASE STUDY |An unexpected outcome A newborn...Ch. 22 - CASE STUDY |Anunexpected outcome A newborn...Ch. 22 - CASE STUDY|An unexpected outcome A newborn...Ch. 22 - HOW DO WE KNOW? Population geneticists study...Ch. 22 - Review the Chapter Concepts on page 441. All these...Ch. 22 -
3. Price et al. (1999. J. Bacteriol. 181:...Ch. 22 -
4. The genetic difference between two Drosophila...Ch. 22 - The use of nucleotide sequence data to measure...Ch. 22 - Calculate the frequencies of the AA, Aa, and aa...Ch. 22 - Prob. 7PDQ
Ch. 22 -
8. What must be assumed in order to validate the...Ch. 22 - In a population where only the total number of...Ch. 22 -
10. If 4 percent of a population in equilibrium...Ch. 22 -
11. Consider a population in which the frequency...Ch. 22 - If the initial allele frequencies are p = 0.5 and...Ch. 22 -
13. Under what circumstances might a lethal...Ch. 22 - Assume that a recessive autosomal disorder occurs...Ch. 22 -
15. One of the first Mendelian traits identified...Ch. 22 -
16. Describe how populations with substantial...Ch. 22 - Achondroplasia is a dominant trait that causes a...Ch. 22 -
18. A recent study examining the mutation rates...Ch. 22 - A form of dwarfism known as Ellis–van Creveld...Ch. 22 -
20. List the barriers that prevent interbreeding...Ch. 22 - What are the two groups of reproductive isolating...Ch. 22 - Prob. 22PDQCh. 22 -
23. In a recent study of cichlid fish inhabiting...Ch. 22 - What genetic changes take place during speciation?Ch. 22 - Some critics have warned that the use of gene...Ch. 22 - Comparisons of Neanderthal mitochondrial DNA with...
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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
- How is it possible that there are multiple different alleles in a population and yet any individual can have only two alleles?arrow_forwardIn a population that meets the Hardy–Weinberg equilibrium assumptions, 81% of the individuals are homozygous for a recessive allele. What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?arrow_forwardWhat is a rare allele in the population?arrow_forward
- Applying the Hardy-Weinberg equilibrium. 81% of the individuals are homozygous for a recessive allele. What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?arrow_forwardWhat determines how often a phenotype occurs in a population?arrow_forwardWhat is the ultimate cause of variation in populations?arrow_forward
- If a particular population of diploid individuals is in equilibrium and contains 16% homozygous dominant individuals, 48% heterozygotes, and 36% homozygous recessive individuals, what is the frequency of the recessive allele in this population?arrow_forwardConsider a population with 28 individuals with the genotype AA and 12 Aa individuals and 50 individuals with the genotype aa how many alleles in this population in total?arrow_forwardWhen an allele is dominant, why does it not alwaysincrease in frequency to produce the phenotypeproportion of 3:1 (3/4 dominant : 1/4 recessiveindividuals) in a population?arrow_forward
- If 98 out of 200 individuals in a population express the recessive phenotype, what percent of the population are heterozygotes?arrow_forwardIf 4 percent of a population in equilibrium expresses a recessivetrait, what is the probability that the offspring of two individualswho do not express the trait will express it?arrow_forwardHow do geneticists detect the presence of genetic variation as different alleles in a population?arrow_forward
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