Biology 1108 Questions with CORRECT Answers

Biology 1108 6 Questions with CORRECT Answers


Question:
Hypothesis
Answer:
Testable explanation for a set of observations based on the available data &
guided by inductive reasoning (Narrow)

Question:
Scientific Theory
Answer:
A concept that has been well tested, and is accepted as an explanation to a wide
range of observations (broad)

Question:
Evolution
Answer:
A change over time in genetic composition of a population

Question:
Natural Selection
Answer:
Differential success in survival & reproduction caused by environmental factors

Question:
Reproductive Barriers (Prezygotic)
Answer:
Habitat Isolation, Temporal Isolation, Behavioral Isolation, Mechanical, Gametic

Question:
Reproductive Barriers (Postzygotic)
Answer:
Reduced Hybrid Viability, Reduced Hybrid Fertility, Hybrid Breakdown

, Question:
Habitat Isolation
Answer:
2 species rarely encounter each other, or never, because they occupy different
habitats, even though not isolated by physical barriers

Question:
Temporal Isolation
Answer:
Species that breed at different times of the day, seasons or years cannot mix
their gametes

Question:
Behavioral
Answer:
Courtship rituals, specific vocalizations, unique to one species

Question:
Mechanical
Answer:
Morphological differences can prevent successful mating

Question:
Gametic
Answer:
Sperm of one species may not be able to fertilize eggs of another

Question:
Reduced Hybrid Viability
Answer:
Genes of the different parent species may interact and impair the hybrid's
development

Question:
Hybrid Breakdown
Answer:
First generation hybrids are fertile, second generation offspring are feeble or
sterile