The bones of a whale flipper are similar to the bones of a bat wing, what does this similarity in bone structure suggest about the whale and the bat?

Which of the following questions may best be answered by studying an organism’s chromosomes?

Which of the following best describes the number of chromosomes in a normal human liver cell?

Which of the following is the primary advantage of sexual reproduction when compared to asexual reproduction?

The cows in a rancher’s herd of cattle have been selectively bred to produce milk. Which of the following will cause the next generation of cows to receive the trait for producing large quantities of milk?

Comparing the skeletons of which of the following fish would best show the evolution of a fish species?

Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms?

Substances enter any plant or animal cell by passing through which of the following structures?

Jerome crossed two purple-flowered plants. The offspring produced from this cross had either white flowers or purple flowers, which of the following statements best explains why some of the offspring have white flowers?

Two dogs of the same breed that have different coat colors. The instructions that determine coat color are stored in the

Human activity most likely contributes to which of the following changes on Earth?

A student prepared the following list of characteristics about a cellular organelle. • present in animal cells • present in plant cells • helps make energy available to the cell. Which of the following cellular structures is the student describing?

Some types of bacteria can only live where oxygen is not present. These bacteria were well adapted to life on Earth over 2 billion years ago. Which of the following changes caused many of these bacteria to become extinct?

Which of the following parts of the human body is most complex?

Which of the following parts of a plant cell has a function that is most similar to the function of an animal skeleton?

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