AP Bio

  • Many species of frogs can interbreed, but they produce embryos that die early on. - Reduced hybrid viability

  • One species of fruit fly hatches every 13 years, while another hatches every 17 years. – Temporal isolation

  • Different flower species have stamens and styles that can only be pollinated by certain insects. – Mechanical isolation

  • Lions and tigers can mate to produce ligers, but ligers are sterile. - Reduced hybrid fertility

  • Eastern and western male meadowlarks have different mating calls. – Behavioral isolation

  • While in the same geographical area, one species of ant occupies tree bark, while another species of ant burrows underground. – Habitat isolation

  • Females from one species of firefly can only recognize the flashing patterns of males in their own species when in mating season. – Behavioral isolation

  • Some species of salamander may interbreed, but most hybrids do not complete development. - Reduced hybrid viability

  • Many orchid species flower on different days. - Temporal isolation

  • Domestic sheep and domestic goats have different numbers of chromosomes. This prevents a zygote from developing normally. - Reduced Hybrid Viability

  • Darwin observed that most organisms produce more than one or two offspring. This observation led directly to his hypothesis that individuals within a population compete for limited resources.
    Answer: True

  • Natural selection acts on genotypes.
    Answer: False
    Individuals can be acted on by natural selection, but only populations evolve.
    Answer: True

  • The fossil record gives a complete visual of evolutionary change over time.
    Answer: False

  • Referring to a cladogram, the root represents the common ancestor of all of the species in that cladogram.
    Answer: True

  • The primary difference between phylogenetic trees and cladograms, is that cladograms show the amount of change over time.
    Answer: False

  • DNA is the most accurate evidence for understanding evolutionary relationships.
    Answer: True

  • Biogeography is the distribution of animals and plants geographically.
    Answer: True

  • Structures that are present but no longer serve a purpose are known as homologous structures.
    Answer: False

  • Taxonomy is the naming and classifying of species.
    Answer: True