Molecular Homologies

Which means: the more similar DNA, the closer related?

• Molecular Homologies

• Homologous Structures

• Vestigial Structures

Tags

NGSS.HS-LS4-1

Which of the following best describes molecular homologies?

• Similarities in DNA sequences among different species

• Physical traits shared by different species

• Behavioral patterns observed in different species

• Ecological roles of different species

What is the primary evidence for molecular homologies?

• DNA sequence comparisons

• Fossil records

• Geographical distribution

• Embryonic development

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

How do molecular homologies support the theory of evolution?

• By showing common ancestry through genetic similarities

• By demonstrating physical adaptations to environments

• By illustrating behavioral changes over time

• By highlighting ecological interactions

Which molecular technique is commonly used to study molecular homologies?

• DNA sequencing

• X-ray crystallography

• Mass spectrometry

• Chromatography

Tags

NGSS.HS-LS4-1

What can molecular homologies reveal about two species?

• Their evolutionary relationship

• Their ecological niche

• Their physical adaptations

• Their behavioral traits

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

Which of the following is an example of molecular homology?

• Similar DNA sequences in humans and chimpanzees

• Wings of bats and birds

• Fins of fish and flippers of whales

• Eyes of octopuses and humans

Tags

NGSS.HS-LS4-1

Why are molecular homologies considered more reliable than morphological homologies?

• They are less influenced by environmental factors

• They are easier to observe

• They are more diverse

• They are more recent

What role do molecular homologies play in phylogenetic trees?

• They help determine evolutionary relationships

• They classify species based on physical traits

• They predict future evolutionary changes

• They identify ecological roles

Tags

NGSS.HS-LS4-1

Which of the following is NOT a molecular homology?

• Similar protein structures in different species

• Analogous structures like wings of insects and birds

• DNA sequence similarities

• RNA sequence similarities

Tags

NGSS.HS-LS3-2