Part A Bdelloid rotifers are microscopic freshwater invertebrates. No one has ever seen a male. Thus, researchers hypothesized that these species reproduce solely by asexual means. What evidence supports this hypothesis? View Available Hint(s) Because of the evolutionary disadvantage of asexual versus sexual reproduction, bdelloid rotifers are in danger of extinction. Males cannot be distinguished from females. Homologous genes in bdelloid rotifers exhibit more variation (are more different from each other) than they would if this organism reproduced sexually. Over time, bdelloid rotifers have increased their chromosome number. Submit
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No males have been observed in bdelloid rotifers, which suggests that they do not reproduce sexually. Show more…
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The authors describe an important experiment in which scientists showed strong support for the hypothesis that bdelloid rotifers have reproduced asexually for millions of years. Briefly describe the results from their experiment that supported this conclusion?
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Identify characteristics of types of asexual reproduction. Budding Fission Parthenogenesis Fragmentation formation of offspring from outgrowths that break free or remain attached to form a colony replacement of parent by two equal offspring growing and developing of embryo from unfertilized egg breaking off of body parts that regenerate into whole individuals used by baker's yeast used by prokaryotic microorganisms seen in some reptiles observed in sponges One ore more characteristics are misplaced. Fragmentation involves the loss of a piece of the parent organism, whether intentional or accidental. The fragment is replaced in the body of the parent and also develops into an entire new entity on its own. Fragmentation is seen in some sea invertebrates as well as in some segmented worms.
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