Homework answers / question archive / Irvine Valley College BIO 1 Quiz #9 (Genetics and Evolution) 1)Speciation that occurs in starts and stops over time is referred to as Gradualism   Punctuated equilibrium Inheritance of acquired characteristics Spontaneous creation What would cause a population to be out of in Hardy-Weinberg equilibrium? No genetic drift is occurring No mutations occurring Natural selection is occurring Random mating If both parents possess brown eyes and they are both heterozygotes, what's the chance of their having a brown-eyed child? A

Irvine Valley College BIO 1 Quiz #9 (Genetics and Evolution) 1)Speciation that occurs in starts and stops over time is referred to as Gradualism   Punctuated equilibrium Inheritance of acquired characteristics Spontaneous creation What would cause a population to be out of in Hardy-Weinberg equilibrium? No genetic drift is occurring No mutations occurring Natural selection is occurring Random mating If both parents possess brown eyes and they are both heterozygotes, what's the chance of their having a brown-eyed child? A

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1. 2. Punctuated equilibrium
   3. Inheritance of acquired characteristics
   4. Spontaneous creation
2. What would cause a population to be out of in Hardy-Weinberg equilibrium?
   1. No genetic drift is occurring
   2. No mutations occurring
   3. Natural selection is occurring
   4. Random mating
3. If both parents possess brown eyes and they are both heterozygotes, what's the chance of their having a brown-eyed child?

A. 25%

B. 50%

C. 75%

D. 100%

4. A mutation involving the flipping of a portion of the DNA is called a
   1. transposition
   2. deletion
   3. inversion
   4. confusion
5. If the allele frequencies of a population are p = 0.1 and                      q = 0.9, what is the predicted frequency of the heterozygotes?

A. 0.09

B. 0.81

C. 0.18

D. 0.82

6. Characteristics that demonstrate incomplete dominance possess a phenotype like that of the homozygote dominant.
   1. True
   2. False
7. Which of the following is an example of post-zygotic reproductive isolation?
   1. Hybrid sterility
   2. Temporal barrier
   3. Mechanical barrier
   4. Ecological barrier
8. Which form of speciation is based on geographic isolation?
   1. allopatric
   2. sympatric
   3. parapatric
   4. Saint patrick
9. The measure of an organism’s relative fitness is a measure of its
   1. Survivability
   2. Strength
   3. Reproductive output
   4. Competitive ability
10. Darwin gained insight on the view that there is an avoidable struggle for existence from
    1. Malthus
    2. Hutton
    3. Empedocles
    4. Lyell