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- Multiple ChoicePlease save your changes before editing any questions.How does embryology support the Theory of Evolution?It shows that they have a common ancestor because of their similarities.I'm not sure.Animals change over time.
- Multiple ChoicePlease save your changes before editing any questions.The most recent ancestral form or species from which two different species evolved is known as ________________________.a common ancestor.an embryonic stage.development.evolution.
- Multiple ChoicePlease save your changes before editing any questions.Common ancestry relates to evolution becauseevolution only happens when there are common ancestors.Common ancestors make evolution happen more quickly.evolution can never take place with common ancestors.the more two organisms have in common, the more recent is their common ancestor during their evolution.
- Multiple ChoicePlease save your changes before editing any questions.
In stage one (top row) of these embryos, most of the embryos________look very similar.have very different features.show different stages of development.have only a tail if they are non-human. - Multiple ChoicePlease save your changes before editing any questions.In the the third embryonic stage (bottom row), mammal embryos _____have more characteristics in common with each other than with reptiles or birds.are still hard to tell from reptiles and birds.have the same features as fish, reptiles, and birds.do not have tails.
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What type of evidence is represented in the picture above:
Fossils
Vestigial Structures
DNA
Homologous Structures
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What type of evidence is shown in the image above?
Fossils
Vestigial structures
Homologous Structures
DNA
- Multiple ChoicePlease save your changes before editing any questions.
What type of evidence are shown in the picture above?
Fossils
Embryology
Homologous Structures
Vestigial Structures
- Multiple ChoicePlease save your changes before editing any questions.The similarities of the bones in the diagram provide evidence that---The organisms shown lived in the same natural envionrmentThe organisms shown may have developed from a common ancestorThe organisms shown have the same genetic diseasesAll vertebrate species have identical forelimbs
- Multiple ChoicePlease save your changes before editing any questions.According to this data, the unknown bacterial species is most closely related to:Species ISpecies IISpecies IIISpecies IV
- Multiple ChoicePlease save your changes before editing any questions.The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?Fossil A and C are the same ageFossil B is older than fossil CFossils A is older than fossil BFossil D is older than fossil C
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Body parts similar in structure and origin
evolution
embryology
homologous
variation
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A category of structures that have a similar function, but are structurally different.
Homologous structures
Analogous structures
Vestigial structures
Common core structures
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What type of structure does this image illustrate?
Homologous structures
Analogous structures
Vestigial structures
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What are the most important characteristics of analogous structures?
Structures that perform the same function
Structurally different
Structurally the same
Structures that perform different functions
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A type of structure that is physically present, but does not seem to serve a significant function for an organism.
Homologous structure
Analogous structure
Vestigial structure
Standard structure
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The appendix, tailbone, and wisdom teeth are all examples of what type of structure in humans?
Homologous
Analogous
Vestigial
Modern
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Observe the two fish in the image. The cave fish and minnow are genetically related to each other and are similar in many ways. The cave fish lives very deep in the ocean where there is no light. It has only the remnants of eyes and is blind. Minnows live in shallow waters where the water has light. Their eye sight is important for their survival. Which statement below best describes these two fish?
The DNA of the cave fish has changed over time to differ from the minnow. Since there is no light where the cave fish lives, it was not necessary to have working eyes. Over time, mutations occurred which proved to improve the survival of the cave fish, which is why they are now blind and have only physical remnants of eyes.
The DNA has not mutated over time and despite all of the evidence that suggests these two are genetically similar, one has eyes and the other does not so they must not be related.
Cave fish must have been attacked by predators, which is why they only have the remnants of eyes.
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Does the presence of homologous structures in genetically different animals suggest common ancestry?
Yes
No
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The fossil record help scientists
better understand the kinds of organisms that lived in the past
better understand how the environment has changed over time
better understand how organisms have evolved over time
all of the above
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What is the value of a transitional fossil?
Transitional forms show the evolutionary steps between species.
Transitional forms are evidence of punctuated equilibrium.
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Which of the following are homologous structures?
whale flipper and bat wing
legs on a beetle and legs on a cat