Scenario #3
In the year 2850, humans successfully colonized Mars. The Martian modules that were constructed could hold only a small population of people. It is now a century later, and the population on Mars has grown to 600 people. Of the current Mars population, 45 people express the recessive phenotype for phenylketon- uria (PKU) syndrome (pp genotype).

q2 –

q –

p –

p2 –

2pq –

Conclusion Questions
Use this information to help you answer the following questions:
The original population’s actual genotype frequencies were: PP – 0.53, Pp – 0.25, pp – 0.22.

1. Is the current population in Hardy-Weinberg equilibrium? Yes or No

2. Is the current population evolving? Yes or No

3. If the current population is evolving, what type of effect is responsible for genetic drift?

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?