UARK POB SHADWICK EXAM 3 {LATEST
2026 -2027 update} QUESTIONS AND
ANSWERS 100% CORRECT
Natural Selection - correct answer heritable variation, over-reproduction causes
competition and differ in reproductive success and fitness, Adaptation
Natural Selection: Stabilizing Selection - correct answer select against extremes
Natural Selection: Directional selection - correct answer one extreme is favored
Natural Selection: Disruptive Selection - correct answer both extremes favored
Macroevolution - correct answer speciation and divergence of life
,Speciation - correct answer group of organisms capable of interbreeding
Habitat Isolation - correct answer Pre zygotic; Same environment, different niche
Temporal Isolation - correct answer Pre zygotic; mate at different seasons ex. Skunks
Behavioral Isolation - correct answer Pre Zygotic; courtship; blue footed booby,
masked booby
Mechanical Isolation - correct answer mating; genetals do not match
Gamete Isolation - correct answer mating; sperm and egg do not match ex. Sea
urchins
Zygote mortality isolation - correct answer fertilization; zygote dies after it is fertilized
, Hybrid Sterility Isolation - correct answer fertilization; mules, cannot reproduce
F2 Fitness Isolation - correct answer F2 generation has reduced fitness ex. Inbred
Allopatric Speciation - correct answer in the same geographical area, new barrier
Sympatric Speciation - correct answer same region; one allele takes over and a
randomly changes; reproductive not geographical
Taxonomy - correct answer Domain, Kingdom, Phylum, Class, Order, Family, Genus,
Species
Phylogeny - correct answer grouped shared homologous characteristics
2026 -2027 update} QUESTIONS AND
ANSWERS 100% CORRECT
Natural Selection - correct answer heritable variation, over-reproduction causes
competition and differ in reproductive success and fitness, Adaptation
Natural Selection: Stabilizing Selection - correct answer select against extremes
Natural Selection: Directional selection - correct answer one extreme is favored
Natural Selection: Disruptive Selection - correct answer both extremes favored
Macroevolution - correct answer speciation and divergence of life
,Speciation - correct answer group of organisms capable of interbreeding
Habitat Isolation - correct answer Pre zygotic; Same environment, different niche
Temporal Isolation - correct answer Pre zygotic; mate at different seasons ex. Skunks
Behavioral Isolation - correct answer Pre Zygotic; courtship; blue footed booby,
masked booby
Mechanical Isolation - correct answer mating; genetals do not match
Gamete Isolation - correct answer mating; sperm and egg do not match ex. Sea
urchins
Zygote mortality isolation - correct answer fertilization; zygote dies after it is fertilized
, Hybrid Sterility Isolation - correct answer fertilization; mules, cannot reproduce
F2 Fitness Isolation - correct answer F2 generation has reduced fitness ex. Inbred
Allopatric Speciation - correct answer in the same geographical area, new barrier
Sympatric Speciation - correct answer same region; one allele takes over and a
randomly changes; reproductive not geographical
Taxonomy - correct answer Domain, Kingdom, Phylum, Class, Order, Family, Genus,
Species
Phylogeny - correct answer grouped shared homologous characteristics
