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- Survival (%) 100- 80- 60- 40- 20- 0-t T 2.1 ( T T T - 1.9 2 2.2 2.3 2.4 2.5 2.6 2.7 Log SVL (mm) Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed the percent survival of different-sized animals, all of the same age. The graph above shows the log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of these different size classes for males (dashed line) and females (solid line). Based on the figure above what type of selection for body size appears to be occurring in female marine iguanas? (A) balancing selection (B) disruptive selection C) stabilizing selection (D) directional selection (E) sexual selectionSea turtles exhibit temperature-dependent sex determination, meaning that ambient temperatures control whether or not a developing turtle embryo will become male or female. The data table reflects the numbers of turtle offspring counted in Year 1 and Year 2 of a study. Male Female Year 1 180 20 Year 2 164 33 What type of test can scientists use to assess whether or not the ratio of male to female sea turtles is dependent upon the year? O ANOVA O Chi-square contingency O 2-sample t test O Chi-square goodness of fit2. Calibri B ctions: Read each question below carefully, determine correct equation to use, and calculate for the variable ng asked for in the question. Show your work. 12 + b A population of 20 velociraptors has 4 babies in one breeding season. However, 2 of the older velociraptors die off due to old age. What is the growth rate of this population of velociraptors? Type answer here A population of 100 mice has a growth rate of 0.2. In an exponential growth environment, what is th Type answer here What if the population of mice had a carrying capa Tuna anciar hara
- According to the figure for oppossums Birth Age (months): 0 Energy source: Energy used for: Baby Juvenile Maturity Adult Killed by predator 1st litter 2nd litter Independence (8 pups) (7 pups) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mother Gathered by self Growth, metabolism, and repair Metabolism, repair, and reproduction delayed maturation = longer growth = larger litters early maturation = shorter growth = larger litters early maturation = shorter growth = fewer litters delayed maturation = longer growth = more littersWhat is often true of a population of organisms with a type Il suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any age34 You have a pet fish. You have been tapping on the glass wall of its tank everymorning to say hello and then you feed your fish and watch him swim to the surfaceto eat. One evening you tap on the glass wall to say goodnight to your fish. Younotice that your fish comes to the surface of the water.Explain what type of behaviour this is and how this behaviour aids the survival of thisanimal.Answer in a sentence format.
- According to the graphs on the right (a) (b) (c) Number fledged Mean calves per year Mean eggs per day 2 (378) (184) (73) (26) (39) *** 2.0 1.0- 0.5- 0 1 2 3 4 5 Age (years) 1 3 36- 12 5 Stags Hinds 7 9 11 13 15 17 Age (years) 0 8 16 24 32 40 48 Age from start of assay (days) Probability of survival 1,000 750 500 Number of survivors 0.6 (365) (177) (73) (18) (33) 0.5- 0.4- 0.3- 0.2 Number alive 250 100 50 60 40 20 1 0 2 Age (years) 3 4 5 Stags Hinds 0 2 4 6 8 10 12 14 Age (years) 20 40 60 80 Adult age (days) survivorship increases with age when young but then decreases w/age reproductive ability increases with age when young but then decreases w/age survivorship declines with age reproductive ability declines with ageAnswer the following questions using this information: Bowhead whales can live up to 150 years, reproducing first when they reach 25 years of age, which is when they leave their mother. The survival curve for this whale species is shown below. Indicate which answer is correct about this whale. % alive age in years 150 O They have a type 1 survival curve and show little parental care of offspring. O They have a type 2 survival curve and show strong parental care of offspring. They have a type 1 survival curve and show strong parental care of offspring O They have a type 3 survival curve and little parental care of offspring.Litter size, and calving interval can be measure in chicken. True or False
- 11.0 G. fortis 10.0- 1978 1976 9.0F 8.0 8.0 9.0 10.0 11.0 Midparent bill depth (mm) Geospiza is a genus of finches that inhabit the Galapagos Islands. In 1976, finches were grouped together based on the average depth of their bills. The data from the first generation of grouped finches are plotted on the X-axis. The bill depths of the offspring from each group are plotted on the Y-axis. In 1978, the experiment was repeated after a drought on the Galapagos Islands. The red line represents the data from 1976 and the blue line represents the data from 1978. The slope of both the red line is 0.90 and the slope of the blue line is 0.90. Was there any change in the heritability of the bill depth trait after the drought? Explain your reasoning. Offspring bill depth (mm)Kudu Scenario Kudu are an antelope species found in easterm and southerm Africa. Male kuou have dramatically spiraled homs, which makes them a target of trophy hunters. Begin by setting up the following parameters: k= 100, r= 0.26, N, = 10. Use the gear icon to adjust the min & max values of N, and k to 2 and 200, respectively. Set the max value oft to 50. 25. At what time ("T value) do kudu populations reach their carrying capacity, given these parameters? 28. What happens to the growth rate of a kudu population as it gets closer and closer to its carrying сарacity? 27. What sorts of environmental changes might cause k to increase in this environment? What might cause k to decrease? 28. Trophy hunters move into the area, leading to an increased death rate, which decreases the growth rate rto 0.13. Exolain how this change will impact the population growth patten. [Hint Look at when the population now reaches its carrying capacity, given this decrease in r. Compare your original curve…1 Fri Mar 1 to C 1 hp + Writing Task: Citing the supplied documents and using your knowledge of natural selection, complete the following tasks. Explain what genetic variation is and how is it beneficial to a population facing an environmental challenge Engage in argument from evidence whether small or large body size is more fit for survival in the fish populations. Predict what is likely to happen to body size for fish harvested by nets if the holes in the nets were to become smaller 10% Done
