Week 9 _ evidences of evolution _ Grade 10ASP

The arm of a human, the flipper of a whale, and the wing of a bat all have similar bone structures. Therefore, these parts of the body would all be considered...

• homologous structures

• vestigial structures

• transitional fossils

• common ancestors

The two most important things that the fossil record tell us about the history of life on Earth are...

• some species go extinct, and it is impossible for new species to take their place

• some species go extinct, and new species appear over time

• species usually never go extinct, but somehow dinosaurs did go extinct

• Earth never changes, and changes to life on Earth happen very quickly

Darwin's study of biogeography led him to 2 very important observations. They were...

• species vary globally, and species never adapt

• species vary locally, and global species show no similarities

• species vary globally, and species vary locally

• species never evolve, and species vary locally

The study of embryological development (evo-devo) provides anatomical evidence for evolution because...

• all vertebrate embryos pass through the same stages of development in the same sequence.

• all vertebrates are born with gills and a tail.

• all vertebrate embryos have completely different stages of development that look nothing alike.

• all plants and animals have wings, even if you can't see them when they are born.

The tail bone, wisdom teeth, and appendix are all parts of the human anatomy that would be considered...

• homologous structures

• vestigial structures

• fossils

• extinct

A bird's wing and a butterfly's wing have the same function, but they have very different structures. These structures are classified as follows:

• homologous structures

• analogous structures

• vestigial structures

• embryological homologues

Evolutionary biologists say that similarities between different species are evidence of which of the following?

• Organs shrinking and losing their function

• Formation of the first cell in an organic soup

• The presence of a common ancestor in a species

• The concept that life comes only from life

According to evolutionists, which is the best test to show the relatedness of two organisms?

• Similarity in embryological development

• Similarity in feeding behavior

• Similarity in structure

• Similarity of amino acid sequence in DNA

Based on the number of differences in amino acid sequence, which pair of organisms is least related to each other?

• Fruit fly-wheat

• Human - wheat

• Fruit fly- pigeon

• Human-horse

Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence