Lesson 6.6 BYK - Cladograms

What is the purpose of a cladogram?

• To map the ancestral relationships and shared traits of different organisms.

• To trace the inherited traits of a single species over time.

• To check the likelihood of an offspring having a particular trait.

• To monitor mutations that arise among different populations.

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How has technology helped us in understanding evolutionary relationships?

• We can travel back in time to observe different organisms in their habitats.

• We clone different organisms using DNA from fossils so we can bring them back and observe.

• We can now compare the DNA of different organisms to help determine the relationships between them.

• We can follow different organisms on Twitter to look for similar traits and characteristics.

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How can a cladogram be used to show how closely related two organisms are?

• The further apart two organisms are on a cladogram the more they have in common.

• If two organisms are next to each other on a cladogram then they must be the same species.

• All organisms share a common ancestor.

• You can use a cladogram to see how many traits two organisms have in common. The more in common, the more closely related they are.

Tags

NGSS.MS-LS4-2

What traits do most mammals share? Check all that apply.

• Vertebrates

• Lay Eggs

• Have hair

• Produce Milk for their young

• Endothermic (Warm Blooded)

A branched diagram that shows ancestry, or how you and your relatives have descended from common relatives.

• Cladogram

• Pedigree

• Family Tree

• DNA Test

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A “family tree” made by scientists to show relationships of ancestry and similar traits between organisms.

• Cladogram

• Scientific Family Tree

• Pedigree

• DNA Test

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What characteristics do all of these animals have in common?

• Vertebrate

• Lungs

• Endothermic

• Mammal

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What do both the squirrel and lion have in common that the other animals do not?

• They are both vertebrates

• They both have lungs

• They are both mammals

• They both lose their canine teeth.

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Is a bird more closely related to a prosimian or to an amphibian?

• Birds are more closely related to prosimians because they have more in common.

• Birds are more closely related to amphibians because they have more in common.

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What do amphibians, birds, prosimians and humans all have in common? Check all that apply.

• Hair

• Endothermic

• Eukaryotic

• Tetrapod

• Vertebrate

Tags

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