The chance of an organism being preserved as a fossil is very low
a. true
b. false
Answer: a. true
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Characters that exist in two or more discrete states are by definition
a. quantitative variation. b. qualitative variation. c. in genetic equilibrium. d. showing punctuated equilibrium. e. undergoing disruptive selection.
Which of the following statements is
CORRECT about mutation?
a. Mutations caused by environmental factors are always repaired. b. Mutations occurring during the replication process are always harmful. c. Mutations only occur during DNA replication. d. Mutations occurring during the replication process only affect the secondary structure of proteins. e. Mutations are permanent changes in the base sequence of DNA.
What gives bones the strength to withstand mechanical stresses?
a. osteocytes b. minerals c. osteoblasts d. matrix e. collagen
A new plant species is introduced to Daphne Major and produces small, thin seeds. This plant species is highly adapted to drought and after 5 years has replaced over 80% of the native plants that produce large seeds. How will this change affect the evolution of beak size in the medium ground finch population?
A. Small beaks will be favored under all rainfall conditions. B. Large beaks will be favored in wet years and small beaks will be favored in dry years. C. Large beaks will be favored under all rainfall conditions. D. Small beaks will be favored in wet years and large beaks will be favored in dry years.