Biology: The Unity and Diversity of Life (Looseleaf)
15th Edition
ISBN: 9781337408417
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 17, Problem 12SQ
True or false? Inbreeding can increase the frequency of a harmful allele in a population's gene pool.
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The level of inbreeding is proportional to the FST value. (True or false)
Inbreeding attenuates heterozygosity. (True or false)
Threatened species often have small, isolated populations where mating between relatives occurs. Let's assume one of these threatened species has a disease controlled by a gene that has two alleles A and a. Only individuals with two copies of the "a" allele have the disease and die before reproducing.
Question:
What are the effects of inbreeding on the frequency of the "a" allele, and the frequency of the disease in the population?
the closer or higher the degree of relationship of the parents, the higher the inbreeding depression of the offspring. true or false
Chapter 17 Solutions
Biology: The Unity and Diversity of Life (Looseleaf)
Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAACh. 17 - Prob. 4DAACh. 17 - Prob. 1SQCh. 17 - A neutral mutation _______ . a. has a pH of 7.0 b....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - A wild population of pea plants has two alleles...Ch. 17 - Which of the following is not part of how we...Ch. 17 - Prob. 6SQ
Ch. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - Which is required for a population to evolve? a....Ch. 17 - Prob. 10SQCh. 17 - After fire devastates all of the trees in a wide...Ch. 17 - True or false? Inbreeding can increase the...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - Prob. 14SQCh. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CTCh. 17 - About 70 percent of flowering plants are...
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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
- In a population that is in HW equilibrium, 38% of individuals are recessive homozygotes for a certain trait. In a population of 14,500, calculate the percentage of homozygous dominant individuals and heterozygote individuals.arrow_forwardThe frequency of a recessive allele in a population is 50%. What is the frequency of the dominant allele?arrow_forwardWhat are the advantage and disadvantages of inbreeding in the economy? Give a solid example.arrow_forward
- A farmer is raising rabbits. The average body weight in his population ofrabbits is 3 kg. The farmer selects the 10 largest rabbits in his population,whose average body weight is 4 kg, and interbreeds them. If the narrowsenseheritability of body weight in the rabbit population is 0.7, what is theexpected body weight among the offspring of the selected rabbits?arrow_forwardIn a population, the frequencies of two alleles are B = 0.67 and b = 0.33. The genotype frequencies are BB = 0.50, Bb = 0.37, and bb = 0.13. Do these numbers suggest inbreeding? Explain why or why not.arrow_forwardA gene for flower color in pea plants has two alleles, A and a. Given the following genotype frequencies, which of these populations shows evidence of possible inbreeding? AA-0.38, Aa-0.22, aa-0.40 O AA-0.25, Aa-0.5, aa-0.25 O AA-0.01, Aa-0.18, aa-0,81 O AA-0.12, Aa-0.64, aa-0.24 O AA-0.09, Aa-0.42, aa-0.49arrow_forward
- Random events are know to contribute to changes in allele frequencies. Do these random events typically play a greater role when the population size is large or small?arrow_forwardIn a population of 1000 people, 600 are homozygous dominant, 150 are heterozygous and 250 homozygous recessive. what is the frequency of the dominant allele? a67.5 b77.5 c87.5arrow_forwardThe small remaining cheetah populations in the world are at risk of inbreeding depression . Which one or more of the following is true about inbreeding depression ? It is the result of reproduction in closely related individuals . It can increase the likelihood of recessive genetic diseases . It results in more variation in alleles . Answers a and b are both true . Answers a and d about both true .arrow_forward
- A population in HW equillibrium is taken into the lab for an experiment in which inbreeding occurs. The inbreeding coefficient is 0.6. The original population is genotyped to determine the alleles present at the A locus, and the following frequencies of the three genotypes is observed: AA 0.49 Aa 0.42 aa 0.09 What is the expected frequency of aa individuals in the next generation? A. 0.258 B. 0.216 C. 0.09 D. 0.184arrow_forwardBelow is a diagram showing decreased fitness before and after a hypothetical bottleneck in which all of the inbreeding depression is due to increased homozygosity for deleterious recessive alleles. The open circles show the average fitness of hypothetical 'mutant-free' individuals that have no deleterious alleles. The shaded circles show the average fitness of individuals produced by random mating. The dark circles show the average fitness of individuals with an Fof 0.25 (equivalent to full-sib matings). In the diagram on the right, imagine that 'before' refers to before genetic rescue has been instituted (that is, before managed gene flow into a small and isolated population). The circles are defined the same as above. Draw what the circles (unfilled, grey filling, and dark filling) would look like in the 'after' portion of the diagram, that is, after a single pulse of gene flow from a small number (~5) of translocated individuals, if fixed genetic load decreases in this population.…arrow_forwardIn a donor population, the allelic frequency of HbA (dominant) is 0.90 and for HbS (recessive) is 0.10. A group of 550 individuals migrate to another population of 10,000 individuals where the allele frequencies are HbA = 0.99 and HbS = 0.01. Calculate the allele frequencies after the migratory event in the receiving population. Use Allelic frecuency after migration= mPx+(1-m)Py P+q=1arrow_forward
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