{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

These groups cant simultaneously fix good mutations

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: etting variable offspring. There must be benefits to variable offspring. Tangled bank theory: Intra- specific competition among siblings is avoided by the production of variable offspring. This avoids too much competition due to identical needs. The red queen: rare genotypes in offspring that the environment (i.e. parasites) hasn’t seen before. From one generation to the next, there may be an advantage to having a rare phenotype These rare genotypes, with the highest fitness, are produced by sexual reproduction/ Evidence for the Red Queen hypothesis: Sex is favored under high parasite stress; disfavored under low parasite stress Parasites aught to be best at infecting the common genotypes more than the rare genotypes Sex favored in groups: Asexual groups: mutations occur in sequence within lineage. These groups cant simultaneously fix good mutations at different loci. This bind is called clonal interference. Multiple good alleles may segregate at once, but they won’t all fix. Sexual groups: it’s like all loci can adapt at once. Recombination produces individuals (lineages) that possess pairs of beneficial l...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern