Question

• A population of plants displaying incomplete dominance for flower color (determined by one gene with only two alleles) has 60 individuals with red flowers (RR), 20 individuals with pink flowers (Rr), and 20 plants with white flowers (rr). What would you expect the phenotypic ratios to be in the future assuming the population is allowed to move to Hardy-Weinberg equilibrium? (show your work).

• The population of deer is currently 2,000 individuals. The population can be described by a logistic model with K = 5,000 and r = ½. If 600 deer are hunted this season, will the population of deer go up, or down, or stay at 2,000? Is this harvest rate sustainable? What is the maximum sustainable yield? Explain.

• Draw a phylogenetic tree representing the relative branching pattern to illustrate the inferred evolutionary relationships between these modern organisms: ferns, Volvox, cycads, corn, liverworts, orchids, oak trees, spruces, and soybeans?

• I return from a birding trip and present Ann, Bob, & Joe this list of 8 bird species: Blue Grosbeak, Blue Jay, Brown Pelican, Brown Thrasher, Green Jay, Green Ibis, White Ibis, and White Pelican. I tell them I only saw one species from that list. I tell Ann only the color and I tell Bob only the type of bird. Ann says, “I can figure out that Bob can’t know.” Bob responds, “I couldn’t, but now I can figure it out.” Ann then says, “Now I know also.” Joe has been listening in and says, “I still don’t know which of those 8 species you saw, but it has to be either _____ or ______.” Which two species did Joe say?

Answer 1

# plants = 20 + 60 + 20 = 100

Phenotypic ratio of flowers -

Red = 60/100 = 0.6

Pink = 20/100 = 0.2

White = 20/100 = 0.2

Because the population is under Hardy weinberg equilibrium, the phenotypic ratio will remain same in the future as well.

According to the guidelines, only first question can be answered. Please give a good rating.