U7L2 - Post Quiz - Evidence of Evolution

_______ ______ are newly evolved features, such as feathers, that do not appear in the fossils of common ancestors.

All of the following are morphological evidence for evolution except:

• vestigial structures

• cytochrome c

• analogous structures

• homologous structures

Which are anatomical structures inherited from a common ancestor?

Multiple choice question.

correct

• Analogous structures

• Homologous structures

• Derived structures

_________ ______ are more primitive features, such as teeth and tails, that do appear in ancestral forms.

This image is an example of

• vestigial sttructures

• similar embryology

• geographic distribution

• fossil record

Which statements about morphology as evidence of evolution are true?

Multiple select question.

• Evolution predicts that ancestral features that no longer have a function will become smaller over time until they are lost.

• Evolution predicts that an organism’s body parts are more likely to be modifications of ancestral body parts than they are to be new features.

• Analogous structures show that functionally similar features can evolve independently in similar environments.

• Evolutionary theory predicts that molecules in species with a recent common ancestor should share certain ancient amino acid sequences.

Which is an example of analogous structures?

• The wings of an eagle and the wings of a dragonfly

• Human wisdom teeth and an emu's wings

• The forelimb of a cat and the forelimb of a bat

Which statements about vertebrate embryos are true?

Multiple select question.

• correct

• correct

• Scientists have not been able to learn anything about evolutionary relationships among organisms by studying vertebrate embryos.

• Vertebrate embryos exhibit analogous structures during certain phases of development but become totally different structures in the adult forms.

• In fish, pharyngeal pouches develop into gills. In reptiles, birds, and mammals, these structures become parts of the ears, jaws, and throats.

• Although the adult forms differ, the shared features in the embryos suggest that vertebrates evolved from a shared ancestor.

• All vertebrate embryos have a tail and paired structures called pharyngeal pouches.

What does evolutionary theory predict about molecules in species with a recent common ancestor?

Multiple choice question.

• Organisms that have closely related morphological features will have less related molecular features.

• The more closely related the species are, the greater the number of shared amino acid sequences.

• Closely related species will have identical genomes.

The more closely related two species are, the _______ the number of amino acid sequences will be shared.