If a researcher were to only conduct studies of rotifers in homogeneous environments and never in heterogeneous environments, the research may underestimate the benefits of _ and O polymorphisms; parthenogenesis heterozygosity; genetic drift gene flow; asexual reproduction heterozygosity; sexual reproduction

When considering similarity between species in heritable characteristics, the lack of homology is homoplasy. True OR False

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Why does the maintenance of outcrossing require populations to be continuously exposed to changes in their environment? How does the Red Queen hypothesis fulfill this requirement?

Swordtails, platyfish and Poecilia species are incapable of interbreeding with each other but swordtail species 1 can produce viable hybrids with swordtail species 2. In addition, both Poecilla fish, platyfish, and swordtails can all be distinguished genetically, but swortail species 1 and 2 cannot be genetically distinguished. Using this information indicate how many distinct 1) Biological, 2) morphological, and 3) phylogenetic species would be found in this group of fish. If you cannot determine this for any of the 3 species categories, state what you would need to know in order to do so. Edit View Insert Format Tools Table 12pt v Paragraph v BIUAv er Tv: 1. There are four 2.

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In birds, where the female typically handpicks the male to reproduce with, there are clear differences in appearance between the genders. That difference in appearance is called Gender Binarism Runaway Selection Sexual Dimorphism Divergent Evolution

n the savannahs of the Amazon different species of the genus Ipomoea are pollinated by either bumblebees or hummingbirds; lavender flowered I. marabaensis and red flowered I. cavalcantei. Which of the follwing data would support the suggestion of natural interspecific hybridization with weak postzygotic isolation?   A. magenta flowered hybrids found in the wild were infertile and bidirectionally crossing with parental species   B. magenta flowered hybrids found in the wild were preferentially pollinated by introduced honeybees rather than parental pollinators   C. In the laboratory, offspring resulting from crosses between I. cavalcantei, I. marabaensis showed a mixture of parental floral characteristics   D. In the laboratory, offspring resulting from crosses between I. cavalcantei, I. marabaensis and magenta flowered hybrid plants were autotropic and showed hybrid viability

To directly test if multicellularity in yeast can evolve as a response to predation pressure, what kind of experiment should you conduct?   Question 2 options:   Cultivate unicellular yeast in the presence and absence of predators and compare the frequency multicellular clusters in each treatment   Add rotifers to pure cultures of unicellular and multicellular yeast and measure the change in light absorption between unicellular and multicellular cultures over 5 days   Cultivate unicellular and multicellular yeast in the presence of predators and compare their growth rate   Cultivate unicellular and multicellular yeast under the exact same conditions and compare their fitness

The behavior of chromosomes during meiosis and subsequent fertilization is responsible for most of the variation that arises in each generation. Which of these processes is included in that variation? 1. Metaphase chromosomal assortment in mitosis 2. Crossing over of replicated homologues from each parent in meiosis 3. Hybridization of random fertilization during cross breeding two species 4. Range expansion of populations 5. All of the above are true