True or False: 

 

The ultimate result of drift is the random fixation of alleles and genetic differentiation within a population.
Group of answer choices

True

False

13. With regard to genetic drift, are the following statements true or false? If a statement is false, explain why. a. Over the long run, genetic drift leads to allele fixation or loss. b. When a new mutation occurs within a population, genetic drift is more likely to cause the loss of the new allele rather than the fixation of the new allele. c. Genetic drift promotes genetic diversity in large populations. d. Genetic drift is more significant in small populations.

The major effects of genetic drift are (a) loss of variation within populations and (b) differentiation between populations. Describe the evidence from potential simulations for these two effects, citing specific examples.

In a model by Wright (1940), the genetic differentiation among local populations was enhanced by metapopulation structure. In contrast, work by Slatkin (1987) suggested that metapopulation

structure can reduce genetic differentiation among populations. How can we reconcile thse two views? Explain how both can be true depending on the characteristics of the metapopulation?