In prokaryotes, certain proteins act to regulate genes by binding to DNA. What could be the effect of these binding proteins? Select all of the answers that apply. A. They may act to turn on gene transcription. B. They may act to turn off gene transcription. C. They may become added to DNA, and then be transcribed. D. They may remove a gene from DNA. E. They may alter the nucleotide sequence in a gene.

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.

What advantages does a pedigree have over a written passage?

Climate like that in the sahara desert have the fastest rates of weathering