Malaria does not currently exist in sweden. imagine that a refugee population from africa has just been invited to settle there, and that the newcomers include some carriers of the sickle cell allele. over time you would expect

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

In a relatively small iguana population the allelic frequency is tracked for three generations. webbing is a recessive allele; no webbing is the dominant allele. during one very rainy spring and summer, a flood washes all the iguana without webbed feet out to sea. by the fall, and three generations later, you have the gene pool seen here.

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation