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New allopolyploid plant species can arise by hybridization between two species. If hybridization occurs between a diploid plant species with
a. Is it likely that sexual reproduction between the allopolyploid species and either of its diploid ancestors would yield fertile progeny? Why or why not?
b. What type of isolation mechanism is most likely to prevent hybridization between the allopolyploid and the diploid species?
c. What pattern of
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Study Guide And Solutions Manual For Genetic Analysis: An Integrated Approach
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- A population of diploid, outbreeding, sexuall-reproducing rodents, population A, lives on a small island. The population consists of 100,000 individuals a)Are all of the individuals of population A genetically identical? Answer yes or no b) A volcanic eruption carves the island into two populations (A1 and A2, 50,000 individuals each). The rodents cannot cross the lava. Immediately after the eruption, you take 100 individuals from each of populations A1 and A2. You are shown a DNA sequence chosen at random from the total pool of 200 sequences; can you tell which population, A1 or A2, it comes from? Answer yes or no. c)How would you determine whether or not individuals from A1 and A2 are reproductively isolated from each other?arrow_forwardConsider a situation where F1 is backcrossed with one of its parental lineage and we obtained A1H1/A2H2 : A2H1/A2H2 : A2H2/A2/H2: A1H2/A2H2 = 295 : 186 : 310 : 209, where A1 and A2 are alleles at a locus and H1 and H2 are alleles at the other locus. What is the recombination (genetic) distance between the two loci in centimorgans? A. 8.9 B. 22.5 C. 18.4 D. 50 E. 39.5arrow_forwardUse two different colors to depict the unduplicated chromosomes of species C with larger chromosomes (2n = 8) and species D with slightly smaller chromosomes (2n =10), and of their F1 hybrid. Is the hybrid likely to befertile?arrow_forward
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- The primrose, Primula kewensis, has 36 chromosomes that are similar in appearance to the chromosomes in two related species, P. floribunda (2n = 18) and P. verticillata (2n = 18). How could P. kewensis arise from these species? How would you describe P. kewensis in genetic terms?arrow_forwarda. What are the various types of reproductive isolating mechanisms that can lead to speciation? b. What are the different modes of speciation? c. Explain how evolution produce the tremendous amount of diversity among organisms.arrow_forwardA large plant arose in a natural population. Qualitatively,it looked just the same as the others, except much larger. Is it more likely to be an allopolyploid or anautopolyploid? How would you test that it was a polyploid and not just growing in rich soil?arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning