Which is a feature of a cladogram?
a. The characteristics must be shared among the organisms.
b. The characteristics must be different among the organisms.
c. It must contain at least three different shared characteristics.
d. It must contain at least three different groups of organisms.
Mason drew the cladogram shown. Which statements best describes the cladogram? Select three options. A. Reptiles are the most primitive.
B. Birds and reptiles are most closely related.
C. Frogs are more closely related to fish than birds.
D. Frogs are more closely related to birds than fish.
E. Fish are the most primitive.
Which best explains why the siblings look more like each other and less like their grandparents?
a. The siblings are more closely related to each other than they are to their grandparents.
b. Each sibling is more closely related to the grandparents than to the other sibling.
c. The grandparents do not have any shared characteristics in common with the siblings.
d. The grandparents do not have any shared characteristics with one another.
Which has been observed in the study of embryology?
A. Species whose embryos have similar traits rarely have a common ancestor.
B. Species whose embryos have similar traits always have similar body forms as adults.
C. All traits present in early embryos remain throughout development.
D. Some traits in certain embryos disappear as the embryo develops.
Which scenario would most likely result in the extinction of one or more species? a. The water temperature of a pond decreases slightly, and the members of the pond populations adapt to the change. b. The conditions are abnormally dry for one season in a desert, resulting in the deaths of a few members of a snake population. c. A predatory fish is introduced into a lake, resulting in a dramatic decrease in the populations of smaller fish. d. A new plant species begins growing in a forest, resulting in a new food resource for many animal populations.