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Zorluk: OrtaEvidence for Evolution: Comparative Biochemistry and Biogeography

Match each piece of biochemical or biogeographical evidence for evolution on the left with its corresponding evolutionary inference on the right.

  • Universal genetic code (DNA/RNA triplet codons)Points to a single common ancestral origin for all living organisms.
  • Disjunct distribution of Glossopteris fossilsProvides evidence for continental drift and vicariance following Gondwana breakup.
  • Serological precipitin cross-reactivityMeasures immunological distance to infer blood protein homology.
  • Adaptive radiation of Galápagos finchesDemonstrates diversification following long-distance oceanic island colonization.

Cevap

The universal genetic code matches with a single common ancestral origin; disjunct Glossopteris distribution matches with continental drift and vicariance; serological precipitin cross-reactivity matches with measuring immunological distance for protein homology; adaptive radiation of Galápagos finches matches with diversification following oceanic island colonization.
Each evidence type correctly maps to its evolutionary cause: molecular universality indicates common ancestry; disjunct fossil flora indicates vicariance/continental drift; serology measures plasma protein similarity; island endemic finches illustrate speciation via adaptive radiation.

Adım Adım Çözüm

1
Identify the biochemical significance of the universal genetic code.
Recognize that shared molecular machinery across all living domains indicates common descent.
Biochemical universality reflects deep evolutionary homology.
2
Analyze biogeographical plant fossil distribution (Glossopteris).
Associate non-marine seed fern fossils on separated continents with ancient continental union and subsequent drift.
Heavy plant seeds could not cross wide oceans, requiring vicariance to explain their distribution.
3
Evaluate serological precipitin testing.
Link antibody-antigen cross-reactivity in blood serum to the degree of immunological and protein similarity.
Stronger precipitin reactions signify closely related protein structures.
4
Examine island biogeography and adaptive radiation.
Connect finch beak diversification on the Galápagos Islands to speciation following island colonization.
Geographical isolation on islands fosters rapid evolutionary adaptation to vacant ecological niches.

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Evidence for Evolution: Comparative Biochemistry and Biogeography
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Evidence for Evolution: Comparative Biochemistry and Biogeography

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