Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 19.3, Problem 1TYK
Summary Introduction
Introduction:
The Hardy-Weinberg equation defines that the allele and genotype frequency remain constant if no disturbing forces are acting. The population will follow Hardy-Weinberg equilibrium if the following conditions are met: no mutation and natural selection, the population is infinite in size, and individuals should mate randomly.
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You are studying a population of mice in a field that have black (genotype BB), dark brown, (Bb) or light brown (bb) fur.
In your population you have 49 black individuals, 274 dark brown and 206 light brown.
What is the frequency of the B allele in the population? (round to 2 decimal places)
if an allele for a gene is fixed the frequency cannot change, which of the following statements is true?
All members of the population are heterozygous
There are at least 3 phenotypes related to that gene represented in the population
The population is more genetically diverse because that allele is fixed
None of the above
In the gene pool of a population with 100 individuals, an extinct allele for a particular gene locus has a frequency of:
Group of answer choices
a. 0.5
b. 100
c. 0
d. 1
Chapter 19 Solutions
Principles of Biology
Ch. 19.1 - Prob. 1TYKCh. 19.1 - Prob. 2TYKCh. 19.1 - The phrase an organism evolves is incorrect....Ch. 19.1 - Prob. 1BCCh. 19.2 - Explain how geography played a key role in the...Ch. 19.2 - Prob. 2CCCh. 19.2 - Prob. 3CCCh. 19.2 - Prob. 1TYKCh. 19.2 - Homologous traits show similarities because the...Ch. 19.3 - What is the frequency of pink flowers in a...
Ch. 19.3 - Prob. 1TYKCh. 19.3 - Prob. 2TYKCh. 19.4 - Lets suppose the climate on an island abruptly...Ch. 19.4 - Prob. 2CCCh. 19.4 - Prob. 3CCCh. 19.4 - Prob. 4CCCh. 19.4 - Prob. 1TYKCh. 19.4 - Prob. 2TYKCh. 19.4 - Prob. 3TYKCh. 19.5 - How does the bottleneck effect undermine the...Ch. 19.5 - Prob. 1TYKCh. 19.5 - Prob. 2TYKCh. 19.5 - Prob. 1BCCh. 19.6 - How does migration affect the genetic compositions...Ch. 19.6 - Prob. 1BCCh. 19.6 - Prob. 1TYKCh. 19.6 - Populations that experience inbreeding may also...Ch. 19 - Prob. 1TYCh. 19 - An evolutionary change in which a population of...Ch. 19 - Homology occurs because different species occupy...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Prob. 8TYCh. 19 - Prob. 9TYCh. 19 - The micro-evolutionary factor most sensitive to...Ch. 19 - Prob. 1CCQCh. 19 - Prob. 2CCQCh. 19 - A principle of biology is that populations of...Ch. 19 - Prob. 1CBQCh. 19 - Prob. 2CBQ
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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
- A meadow is home to a population of plants of a particular species. Among these individuals are 125 plants that have red flowers and 375 plants that have white flowers. The allele of the flower color gene that produces red flowers (R) is completely dominant over the white flower color allele (r). What is the frequency of the dominant R allele in this population? a- 0.75 b- 0.87 c- 0.13 d- 0.25arrow_forwardWhat is the number of dominant alleles in a population of 100 ladybugs with the following genotypes for wing spots (B): 30 BB, 60 Bb, 10 bb? What is the frequency of the recessive allele? Group of answer choices 160, 0.45 120, 0.4 90, 0.6 10, 0.3 60, 0.2arrow_forwardIf a population has10 individuals with genotype AA, 20 with genotype Aa and 70 with genotype aa, what is the frequency of the a allele in the population? Group of answer choices A. 0.75 B. 0.90 C. 0.14 D. 0.70 E. 0.80arrow_forward
- In the gene pool of a population with 132 individuals, a fixed allele for a particular genetic locus has a frequency of a. 0.75 b. 0.5 c. 0 d. 1arrow_forwardWhen a population is at Hardy-Weinberg equilibrium which one of the following is true? Group of answer choices Genotypic frequencies change generation after generation. One can calculate the recessive allele frequency directly from the number of homozygous recessive phenotypes seen. Individuals of the same genotype are most likely to mate. Allele frequencies change generation after generation.arrow_forwardIf a population has 25 individuals with genotype AA, 20 with genotype Aa, and 5 with genotype aa, what is the allele frequency of a? Group of answer choices a. 0.4 b. 0.3 c. 0.2 d. 0.1 e.0.5arrow_forward
- Which of the following is the definition of a gene pool? The combination of alleles that an individual organism possesses. All the alleles in an ecosystem. The total number of individuals in a population. All the alleles in a population of a particular species.arrow_forwardThe genetic description of an individual is its genotype, whereas the genetic description of a population is its (a) phenotype (b) gene pool (c) genetic drift (d) founder effect (e) changes in allele frequenciesarrow_forwardA detrimental recessive allele can increase in frequency by way of Group of answer choices founder effects genetic drift heterozygote advantage lower fitness for heterozygotesarrow_forward
- You sample a population of butterflies and find that 42% are heterozygous for a particular gene. What would be the frequency of the recessive allele in this population? Group of answer choices 0.42 0.28 0.58 0.21 Allele frequency cannot be determined from this information.arrow_forwardThere are 653 individuals in a population 104 of the rabbits in the said population have recessive floppy ears and 549 rabbits have dominant short ears. Use this information to calculate The dominant allele frequency the recessive allele frequency the homozygous dominant frequency the heterozygous frequency and the homozygous recessive frequencyarrow_forwardA hypothetical population was found to have a genotype frequency of AA=20%, Aa=40%, aa=40%. What genotype is in short supply (that is, in less proportions than equilibrium levels)? a. Aa b. AA C. aa d. none of the abovearrow_forward
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