Question

science uses many fields of study to provide evidence that evolution has and is taking place. what determinations can be made from the areas of dna sequencing, homology, embryology, and fossil record. check all of the determinations that these fields support: — organisms share common ancestry — current forms of species descended from ancestral forms — organism change over time — some species that lived are now extinct — new species can develop from existing species

Explanation:

To determine which statements are supported by the fields of DNA Sequencing, Homology, Embryology, and Fossil Record, we analyze each:

1. Organisms share common ancestry:

• DNA Sequencing: Similar DNA sequences across species suggest a common origin.
• Homology: Similar anatomical structures (e.g., vertebrate forelimbs) imply shared ancestry.
• Embryology: Similar embryonic development (e.g., gill slits in vertebrate embryos) supports common descent.
• Fossil Record: Transitional fossils (e.g., Archaeopteryx) show links between ancient and modern species.

→ Supported.

1. Current forms of species descended from ancestral forms:

• Fossil Record: Shows progression from older, simpler fossils to modern, complex forms.
• Homology: Anatomical similarities reflect descent with modification from ancestors.
• DNA Sequencing: Genetic similarities to ancestral species (inferred from fossils/DNA) confirm descent.
• Embryology: Embryonic development patterns mirror evolutionary history.

→ Supported.

1. Organism change over time:

• Fossil Record: Demonstrates gradual changes in species over millions of years.
• DNA Sequencing: Genetic mutations over time lead to evolutionary change.
• Homology: Structural changes in homologous traits (e.g., whale hindlimbs) show adaptation.
• Embryology: Changes in embryonic development (e.g., loss of gill slits in mammals) reflect evolution.

→ Supported.

1. Some species that lived are now extinct:

• Fossil Record: Directly shows extinct species (e.g., dinosaurs, trilobites) no longer exist.
• DNA Sequencing: Absence of DNA from extinct species (except in fossils/extinct samples) confirms extinction.

→ Supported.

1. New species can develop from existing species:

• Fossil Record: Shows new species appearing after ancestral forms (e.g., mammals after reptiles).
• DNA Sequencing: Genetic divergence (e.g., speciation in finches) leads to new species.
• Homology: Divergent evolution (e.g., Darwin’s finches) creates new species from a common ancestor.
• Embryology: Developmental changes can drive speciation (e.g., changes in hox genes).

→ Supported.

All statements are supported by the evidence from DNA Sequencing, Homology, Embryology, and the Fossil Record.

Final Answer (Check all applicable):

• [x] organisms share common ancestry
• [x] current forms of species descended from ancestral forms
• [x] organism change over time
• [x] some species that lived are now extinct
• [x] new species can develop from existing species

Answer:

To determine which statements are supported by the fields of DNA Sequencing, Homology, Embryology, and Fossil Record, we analyze each:

1. Organisms share common ancestry:

• DNA Sequencing: Similar DNA sequences across species suggest a common origin.
• Homology: Similar anatomical structures (e.g., vertebrate forelimbs) imply shared ancestry.
• Embryology: Similar embryonic development (e.g., gill slits in vertebrate embryos) supports common descent.
• Fossil Record: Transitional fossils (e.g., Archaeopteryx) show links between ancient and modern species.

→ Supported.

1. Current forms of species descended from ancestral forms:

• Fossil Record: Shows progression from older, simpler fossils to modern, complex forms.
• Homology: Anatomical similarities reflect descent with modification from ancestors.
• DNA Sequencing: Genetic similarities to ancestral species (inferred from fossils/DNA) confirm descent.
• Embryology: Embryonic development patterns mirror evolutionary history.

→ Supported.

1. Organism change over time:

• Fossil Record: Demonstrates gradual changes in species over millions of years.
• DNA Sequencing: Genetic mutations over time lead to evolutionary change.
• Homology: Structural changes in homologous traits (e.g., whale hindlimbs) show adaptation.
• Embryology: Changes in embryonic development (e.g., loss of gill slits in mammals) reflect evolution.

→ Supported.

1. Some species that lived are now extinct:

• Fossil Record: Directly shows extinct species (e.g., dinosaurs, trilobites) no longer exist.
• DNA Sequencing: Absence of DNA from extinct species (except in fossils/extinct samples) confirms extinction.

→ Supported.

1. New species can develop from existing species:

• Fossil Record: Shows new species appearing after ancestral forms (e.g., mammals after reptiles).
• DNA Sequencing: Genetic divergence (e.g., speciation in finches) leads to new species.
• Homology: Divergent evolution (e.g., Darwin’s finches) creates new species from a common ancestor.
• Embryology: Developmental changes can drive speciation (e.g., changes in hox genes).

→ Supported.

All statements are supported by the evidence from DNA Sequencing, Homology, Embryology, and the Fossil Record.

Final Answer (Check all applicable):

• [x] organisms share common ancestry
• [x] current forms of species descended from ancestral forms
• [x] organism change over time
• [x] some species that lived are now extinct
• [x] new species can develop from existing species