🌎 Environmental Changes
The body structures for a population of chimpanzees were stable for a long period of time. Then they changed, making the chimpanzees stronger. Why did this happen?
What is the chimpanzee’s environment may have changed?
Species inherit their body structures from what group?
What is a common ancestor population?
When a population is separated into different environments, what happens over time?
What is each population changes differently due to natural selection?
Whales have hip bones even though they don’t walk on land. What does this show?
What is they share a common ancestor with land animals?
A scientist who studies fossils.
What is a paleontologist?
Organisms naturally become stronger over time — true or false?
What is false?
When two species share a structure that a third species does not, what does this mean?
What is the two species are more closely related?
What is the process called when populations can no longer reproduce fertile offspring due to a barrier?
What is speciation?
Baleen whales and orca whales both have mandible bones, but they look different. Why?
What is they inherited mandibles from a shared ancestor, but adapted to different environments?
A group of organisms that can reproduce fertile offspring.
What is a species?
If the environment stays mostly the same, what happens to body structures over time?
What is they stay stable?
Among three species, the two that separated most recently are considered what?
What is the most closely related?
What is it called when adaptive traits help individuals survive and reproduce more successfully?
What is natural selection?
When two species share a structure, what can that structure be evidence of?
What is a shared ancestor population?
A change in DNA that may cause new traits.
What is a mutation?
When the environment changes, what process may cause body structures to change?
What is natural selection?
A branching point on an evolutionary tree represents what?
What is a common ancestor population?
What can cause a brand-new random trait to appear in a species’ population?
What is a mutation?
Which structure is shared by all amphibians, reptiles, birds, rodents, and primates?
What is four limbs?
The process where adaptive traits are passed down over generations.
What is evolution?
Over many generations, small changes can build up to large differences. What is this long-term process called?
What is evolution?
What type of evidence is most useful for determining how species are related?
What is similarities and differences in body structures?
Over time, many small mutations and changes can build up into big differences between species. What is this called?
What is evolutionary change over time?
What structure is shared only by primates and rodents?
What is hair or fur?
A structure shared by two species but not a third, used to show relatedness.
What is a diagnostic shared structure?