Zoology Vodcast Projects

Zoology Vodcasts submitted by the General Zoology Students at the University of Minnesota, Spring 2011

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      10 May 2011

      humans and chimps

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      Questions to accompany this vodcast:

      1.  What did the two measurements measure among groups? 

      2.  Which groups were the most likely to evolve towards cooperation?  

      3.  How did the researchers obtain the DNA from the chimpanzees?  

      4.  How do contemporary humans and chimpanzees differ?  

      5.  Cognitive abilities and the capacity for language are factors that played a role in facilitating the evolution of ______________?   

      6.   All of the following are unique characteristics of human cooperation EXCEPT:
      a) High frequency of altruistic cooperation
      b) Cooperation of large groups of strangers
      c) Familial cooperation 
      d) Large scale and complexity

       


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      10 May 2011

      menstrual synchrony in human females

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      Questions to accompany this vodcast:

      1. Define the term The McClintock Effect.

      2. What two pheromones were used in this study? Which one is closely linked
      to menstrual synchrony?

      3. About how long did it take for the closely related roomates to
      synchronize?

      4. Were synchronized women able to detect 3α-androstenol levels at low or
      high dilution concentrations? How is this related to a woman's ovulation
      cycle?

      5. Was there a significant difference between synchronized and
      non-synchronized women in the length of menstrual flow, time since
      menarche, and quality of relationship between roomates? If yes, how so? If
      no, what particular factors pertaining to this experiment defines the women
      between synchronized and non-synchronized?

      6. What is menarche?

       

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      10 May 2011

      orgasms in the human female

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      Questions to accompany this vodcast:

      1) Name and describe the two hypothesis of the female orgasm discussed in the study. 

      2) Which hypothesis from the study was supported? 

      3) Why might women experience non-copulatory orgasms? 

      4) What methods were used in this study to determine sperm counts and sexual behavior? 

      5) True or False: The timing of a woman's orgasm has a significant influence of the number of sperm retained? 

       

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      3 May 2011

      Mate choice and the red effect

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      Questions to accompany this vodcast:

      1. Elliot et al. found that red had what effect on men’s perceptions of woman?

      a) Found them less attractive

      b) Found them more attractive

      c) Thought she would be a kinder person

      d) Scared them 

       

      2. True of False: Women found the woman with a red background more attractive than the woman with the white background.

      3. Compared to the woman in the blue shirt men _____________ the woman in the red shirt.

      a)     Took a longer time looking at

      b)    Were willing to spend more money on a date

      c)     Were willing to spend less money on a date

      d)    Found her more intelligent when it was

       

      4. What other female animals display red on their body when ready to mate?

      5. True or False Men wanted to engage in more sexual behavior with the woman with red more than with any other color

       

       

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      1 May 2011

      Favoritism in Bluebirds

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      Questions to accompany this vodcast:

      1. Ligon and Hill looked at ____ in bluebirds

      A. Sex ratios of fledglings

      B. Seasonal feeding patterns

      C. Fledgling survival rates

      D. Sex-biased parental investment

       

      2. T of F: Females increased investment in sons when mated to males with brighter, less red breast plumage.


      3. T or F: Female blue birds always choose the more ornamented male.

      4. What could this mean?

      5. Explain the experimental set-up for the study by Ligon and Hill that investigated sex-biased parental investment.


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      29 Apr 2011

      brood parasitized canvasbacks

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      Questions to accompany this vodcast:

      1. What taxonomical family of birds contains the ducks, geese, and swans?


      2. Define brood parasitism.


      3. T or F: The canvasback fully submerges underwater during feeding.


      4. According to Sorenson's research, what percentage of "parasitic" eggs successfully hatched? How does that compare with nonparasitic eggs?


      5. If a canvasback parasitizes a nest of wood ducks in one area of the marsh and a wood duck parasitizes a canvasback nest in another, which parasite would you assume had more successful hatches if you're given no further information?


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      28 Apr 2011

      cache pilfering chickadees

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      Questions to accompany this vodcast:

       

      1. What species of bird in the experiment was a non-pilfering bird?


      2.Chickadees can discriminate between:

        A. only non-pilfering birds of the same species

        B. Pilfering birds of different species

        C. Pilferers and non pilferers of the same and different species


      3. How do the researchers know that the Chickadees didn’t just cache in a particular area in the testing room that they liked?


      4. T/F: Chickadees cached in plain view of the non-pilfering Dark-eyed Junco.

       

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      25 Apr 2011

      blood-shooting lizards

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      Questions to accompany this vodcast:

      1. Blood squirting most significantly occurs 

      a. When canid saliva triggers an alarm response

      b. When increased body temperature causes blood vessel to burst

      c. Only nocturnally when lizard is awaken by predator

      d. As a mating ritual

      e. As a defense to canid attacks

       

      2. The horned lizard's habitat of choice is

      a. Tropical areas 

      b. Areas with moderately moist climates

      c. Areas that are very dry 

      d. Areas with high temperatures

      e. Arid  to semi-arid  areas

       

      3. This animal is listed as threatened in which state? 

       

      4. The response time to blood-squirting is faster for humans than Canids.

      True

      False

       

      5. When body temperature is increased 

      a.The number of blood squirting incidences increases

      b. The number of blood squirting incidences decreases

      c. The amount of time before blood squirting incidence  increases

      d. The amount of time before blood squirting incidence  decreases

      e. Body temperature does not have any effect

       

      The blood squirting mechanism is caused by a blood vessel burst

      True

      False

       

      Blood squirting is the primary defense mechanism against the canid

      True 

      False


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      25 Apr 2011

      the crocodilian death roll

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      Questions to accompany this vodcast:

      1. Shear force increases as a function of

      a) Size of the alligator's head
      b) Length of the alligator
      c) Size of the alligator's teeth


      2. Crocodilian shear force of the death roll increases with length in what manner? (i.e. logistically, linearly, exponentially)

        
      3. What is the Alligator's primary method of feeding?

      a. Barrel roll
       b. Death roll
       c. Kamikaze roll
      d. Sushi roll
      e. Cinnamon roll

      4. What is the death roll used for?

      5. Crocodilians form this general shape with their body when initiating the death roll

      a) a "D" shape
      b) a "C" shape
      c)  a "L" shape
      d) A "rod" shape

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      25 Apr 2011

      turtles, tsd, and climate change

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      Questions to accompany this vodcast:

      The results of Schwanz et al showed a correlation between:


      A. Colder winter temperatures and warmer summers

      B. Increased temperatures and increased infant mortality

      C. Increased temperature and fewer nestings

      D. Increased temperature and earlier first nesting date 

      E. Male-biased nests with later nesting date

       

      Nesting plasticity cannot overcome Climate Change because


      Nesting Plasticity cannot change the sex ratio of the nest

      Climate Change has a very drastic effect on nest sex ratios while Nesting Plasticity’s effect is minimal

      Nesting Plasticity increases the percent females produced in each nest, and therefore enforces Climate Change

      Climate Change has no effect on nest sex ratios

      Females cannot not nest late enough in the year to offset Climate Change 


      1) What does TSD stand for?

       

      a) Temperature-dependent sex determination 

      b) tolerence dependent sensitivity determination

      c) Temperature dependent sensitivity determination

      d) tolerance dependent sex degree

      e) temperature  dependent sex degree

       

      2)Most turtles have what kind of sex determination?

       

      a) GSD

      b) haplodiploid sex determination

      c) TSD 

      d) XY sex determination

      e) X0 sex determination


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