All Old Order Amish families from Lancaster County with Ellis-van Creveld syndrome can trace their genealogies to Mr. and Mrs. Samuel King, who immigrated to Lancaster County in 1744. This is an example of __________

A) founder effect
B) mutation
C) gene flow
D) Hardy-Weinberg equilibrium
E) bottleneck effect


A

Biology & Microbiology

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In your own multicellular body, cell with functions have different DNA.

a. true b. false

Biology & Microbiology

What is the age structure diagram for a population that has a birthrate higher than its death rate and larger population in prereproductive ages than in reproductive and postreproductive ages?

A. This population can expect to see a pyramid-shaped diagram that will cause the population to grow in the near future. B. This population can expect to see a pyramid-shaped diagram that will cause the population to decrease in the future. C. This population can expect to see a bell-shaped diagram that will cause the population to grow in the future. D. This population can expect to move into a logistic growth curve in the near future. E. This population can expect to see an urn-shaped diagram that will cause the population to grow in the future.

Biology & Microbiology

Reservoirs include

A. water. B. humans. C. soil. D. animals. E. All of these choices are correct.

Biology & Microbiology

If you were to travel to a region where rice is grown in paddies, you would see lots of the water fern Azolla growing in the water. A farmer would tell you this is done because Azolla is considered a “natural fertilizer. Explain why this is the case.

What will be an ideal response?

Biology & Microbiology