Students described the data collected has support for the phrase survival of the fittest. Their instructor commented that in fact they were seeing an example of differential reproductive success. How does inherited variation lead to differential reproductive success in
this experiment? Choose ALL that apply.
A)
Individuals with advantageous variations survive.
B)
Individuals with unfavorable variations will become extinct over time.
C)
Certain color variations are more advantageous for the conditions at this
time.
D)
Genetic variation exists among the population, as evidenced by color
differences.
E)
Individuals with advantageous variations will contribute more genetic
material to the next generation.

The tasmanian devil, a marsupial carnivore, is facing extinction due to devil facial tumor disease (dftd) which causes bulging cancerous lumps and lesions to erupt around the face and neck — often causing enough deformation to make seeing or eating difficult. dftd has evolved into a contagious cancer, a trait that is unique among cancers. devil mating behavior involves biting around the head and neck, allowing cells from one individual — especially cells from the crumbly dftd tumors — to be transferred to the wounds or face of a new individual. this marsupial was once found across australia, but sea levels rose, isolating the tasmanian population, while the australian population went extinct. what would be an outcome of genetic isolation that is likely to have impacted the spread of dftd? a) reduced territory puts diseased individuals in greater contact with non-diseased ones. b) inbreeding results in less variation in facial features so the cancer is generally fatal. c) genetic isolation has made it difficult for scientists to develop a vaccine against dftd. d) the lack of genetic variation in the immune system of tasmanian devils minimizes resistance to the disease.

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?

Which of the following is the scientific term for an organism that makes its food from inorganic materials? a. autotroph b. heterotroph c. embryotroph