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WorksheetsEvidence of Evolution
Total questions: 9
Worksheet time: 5mins
In the early stages of development, the embryos of dogs, pigs, and humans resemble one another. This observation suggests that these animals may have
A similar number of chromosomes
similar habitat requirements
the same blood components
a common ancestry
The diagrams below show embryos of three different vertebrate species. According to one theory, similarities in these embryos suggest common ancestry. As these embryos mature, they will most likely
develop new organs according to the nutritional requierments of each organism
continue to closely resemble each other as adults
show no similarity as adults
develop the distinctive characteristics of their species
Which organic compounds would be the best to analyze in order to determine in order to determine if two species are closely related?
fats
starches
sugars
proteins
A researcher recently discovered a new species of bacteria in the body of a tubeworm living near a hydrothermal vent. They compared the DNA of this new bacterial species to the DNA of four other species of bacterial. The DNA sequences came from the same part of the bacterial chromosome of all four species. According to these data, the unknown bacterial species is most closely related to
Species I
Species II
Species III
Species IV
Which observation could best be used to indicate an evolutionary relationship between two species?
They have similar nucleotide base sequences
They have similar fur color
They inhabit the same geographic regions
They occupy the same niche.
The sequence of amino acids in cytochrome c molecule, an enzyme found in mitochondria, is identical in humans and chimpanzees. This best supports the concept that
simpler organisms synthesized cytochrome c
humans and chimpanzees have similar nutritional requirements
simpler organisms evolved into more complex organisms
humans and chimpanzees have a common ancestor
The bones in the forelimbs of three mammals are shown below. For these mammals, the number, position, and shape of the bones most likely indicates that they may have
developed in a common environment
developed from the same earlier species
identical genetic makeup
identical methods of obtaining food
Which term describes appendages (structures) that may have different functions, but are similar in structure and are assumed to have the same evolutionary origin?
fossils
homozygous
homologous
mutations
The sequence of amino acids in horse hemoglobin is very similar to the sequence of amino acids in human hemoglobin. This evidence supporting organic evolution has been drawn from the field of comparative
biochemistry (molecules and reactions)
cytology (cells)
anatomy (structures)
embryology (embryo development)
