OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which method provides the most accurate evidence for scientists to use when determining evolutionary relationships between two species of animals?
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comparing genetic sequences in the animals using samples of DNA
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identifying fossil patterns in rock layers where the animals live
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looking for similar vestigial structures in both species of animals
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looking for similarities in the coloration and eating habits of the animals
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Explanation:
Detailed explanation-1: -Phylogenetic trees are used to show evolutionary relationships between a group of organisms.
Detailed explanation-2: -Homologous genes Biologists often compare the sequences of related genes found in different species (often called homologous or orthologous genes) to figure out how those species are evolutionarily related to one another.
Detailed explanation-3: -Molecular clocks are used to determine how closely two species are related by calculating the number of differences between the species’ DNA sequences or amino acid sequences. These clocks are sometimes called gene clocks or evolutionary clocks.
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