Biology B Practice Exam| 431 Questions| With Complete SOLUTIONS

Adaptations result from interactions between organisms and their ______. correct answer: environment Natural selection is based on Darwin's observation that individuals most likely to survive and reproduce are those ________. correct answer: with traits best suited to their current environment The history of life on Earth is recorded in _______. correct answer: rock fossils Which is an example of an acquired trait? correct answer: the ability to write What is a fossil? correct answer: the remains of an ancient organism The modern synthesis theory states that evolution occurs through changes in the gene pool of _______. correct answer: populations Darwin's theory of common descent states that all organisms _______. correct answer: evolved from past organisms According to the theory of _______, today's organisms evolved from past organisms. correct answer: common descent Which is an example of a population? correct answer: all the sugar maple trees in a state park Reproductive separation may result in the _______ of two different species. correct answer: evolution Which two ideas did Darwin use to explain evolution? correct answer: natural selection and common descent When did Lamarck publish his ideas on evolution? correct answer: early 1800s Over many generations, darker fur color becomes more common in a population of squirrels living in a shad