New allopolyploid plant species can arise by hybridization betwee...

Question

New allopolyploid plant species can arise by hybridization between two species. If hybridization occurs between a diploid plant species with 2n = 14 and a second diploid species with 2n = 22, the new allopolyploid would have 36 chromosomes.

What type of isolation mechanism is most likely to prevent hybridization between the allopolyploid and the diploid species?

Accepted Answer

Hey, everyone. Let's take a look at this question together, which of the following is a phenomenon where the hybrid offspring have higher fitness or performance than their parents due to the combination of beneficial traits from both parents. Is it answer choice? A symp patri speciation. Answer choice. B AOP patri speciation, answer choice C hybrid breakdown or answer choice. D heterosis. Let's work this problem out together to try to figure out which of the following answer choices describes this phenomenon. So from the question, we note, we are talking about hybrid offspring that have a combination of traits from both parents. And we note that a hybrid offspring having that combination of traits from both parents describes heterozygous offspring. Since heterozygous offspring have one of each allele that they obtain from both parents. And these heterozygous offspring are showing higher fitness or performance than their parents, which describes the phenomenon of heterosis. Since heterosis describes the phenomenon in which those hybrid offspring have higher fitness or performance than their parents due to their combination of the beneficial traits from both of their parents. So answer choice D heterosis is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.

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