Fossils and genes are used to determine(1 point)
Responses
how species interact with each other.
how species interact with each other.
differences between organisms.
differences between organisms.
how many mutations occurred in a species over time.
how many mutations occurred in a species over time.
how species will change over time.
differences between organisms.
A common ancestor is an organism that is the(1 point)
Responses
indirect ancestor of two or more different organisms.
indirect ancestor of two or more different organisms.
indirect ancestor of one organism.
indirect ancestor of one organism.
direct ancestor of two or more different organisms.
direct ancestor of two or more different organisms.
direct ancestor of one organism.
direct ancestor of two or more different organisms.
A scientist discovers a fossil of a new organism and places it in the fossil record. The fossil shows the organism had similar structures to organism X, which appears later in the fossil record. Which conclusion about the organisms is most reasonable?(1 point)
Responses
The fossils came from the same organism.
The fossils came from the same organism.
The fossils are from an organism that is a descendant of organism X.
The fossils are from an organism that is a descendant of organism X.
The fossils are from an organism that is an ancestor of organism X.
The fossils are from an organism that is an ancestor of organism X.
The fossils are from organisms that lived in the same location.
The fossils are from an organism that is an ancestor of organism X.
Which group includes only bipedal animals?(1 point)
Responses
lesser apes
lesser apes
hominins
hominins
primates
primates
hominids
hominins
What does the fossil record tell us about the evolution of the hominin skull?(1 point)
Responses
The part of the skull surrounding the brain grew larger as hominins evolved.
The part of the skull surrounding the brain grew larger as hominins evolved.
The face stuck out farther from the rest of the skull as hominins evolved.
The face stuck out farther from the rest of the skull as hominins evolved.
The part of the skull surrounding the brain grew more pointed as hominins evolved.
The part of the skull surrounding the brain grew more pointed as hominins evolved.
The face grew wider as hominins evolved.
The face grew wider as hominins evolved.
The part of the skull surrounding the brain grew larger as hominins evolved.
Compared to rodents, rabbits have an extra pair of incisors and other skeletal structures that are different. They also have some features that are similar. What can scientists conclude from this observation?(1 point)
Responses
Rabbit teeth are better than rodent teeth.
Rabbit teeth are better than rodent teeth.
Rabbits evolved from a species of rodent.
Rabbits evolved from a species of rodent.
Rodents and rabbits share a common ancestor.
Rodents and rabbits share a common ancestor.
Rodents and rabbits evolved from different mammal ancestors and lack a common ancestor.