Month: March 2016

APES QOD March 31

1. The presence of fecal coliform bacteria in a sample of river water suggests which of the following? a. The pH of the river is very high. b. The water is contaminated with animal waste. c. The river is devoid

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First Five March 31/April 1

In a population with two alleles, A and a,  the  allele frequency of a is 0.3.  What is the frequency of heterozygotes in the population if the population is in Hardy-Weinberg equilibrium? Why is natural selection NOT considered a random

Posted in Biology, First Fives

APES QOD March 29

The federal legislation that set maximum containment levels for pollutants that cause adverse health effects in humans is the… (A) Water Quality Act (B) Clean Water Act (C) Pollution Prevention Act (D) National Environmental Policy Act (E) Safe Drinking Water

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First Five March 29/30

 What is the source of new genetic variation? Why is this important in regards to natural selection?  Explain how migration (gene flow), genetic drift, and natural selection each effect allele frequencies?

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First Five March 17/18

 What is geographic isolation and reproductive isolation? Give and example of each. Why do some scientists use the term “lucky individuals” in describing genetic drift.

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APES QOD March 17

What are the benefits that dams provide to humans? What are the costs of dams to human society? What are the negative impacts of dams on the environment?

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First Five March 15/16

How is gene flow different from genetic drift in impacting populations of organisms ? If 25% of a population shows a recessive phenotype, what is the allele frequency for that recessive gene?

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APES QOD March 15

Porous water-saturated layers of underground rock are known as A. aquifers. B. recharge areas. C. watersheds. D. runoff areas. E. water tables.

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APES QOD March 14

Which of the following is the best example of grey water? A) Water that is high in calcium, magnesium, and iron. B) Water that is used for bathing and for washing clothes. C) Water from toilets and garbage disposals. D)

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First Five March 14

Describe what is happening to the environment for each of the three types of natural selection.

Posted in Biology, First Fives