EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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That all organisms evolved from common ancestors
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That all organisms are separate and evolved independently of one another
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Some functions found in all living things so it must’ve been in a common ancestor and was passed on
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Detailed explanation-1: -Sometimes referred to as DNA-DNA hybridization, this process hybridizes the genetic information from two different organisms to determine similarities between them. Scientists separate strands of DNA from both species using heat, which breaks the bonds between the base pairs that link the two sides of the double helix.
Detailed explanation-2: -Which is the best explanation of why DNA can be used to show relationships between species? DNA sequences will be similar among species that eat the same kinds of food. DNA sequences will be similar in species that have evolved together through natural selection.
Detailed explanation-3: -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-4: -Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species’ relatedness.