QUESTION 46 Which of the following is FALSE about birds? A. Many bones are hollow B. There are no teeth C. They are the closest extant relatives to dinosaurs D. They have no urinary bladders E. None of the above QUESTION 47 Hox genes A. Determine body plan in animals B. Duplications during animal evolution are related to increased body complexity C. Are highly conserved across animal species D. All of the above QUESTION 48 Most animals on Earth today trace their common ancestry to the period known as A. Jurassic B. Cambrian C. Triassic D. Cretaceous
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A. Many bones are hollow - This is true, as hollow bones help birds to reduce their weight and make it easier for them to fly. B. There are no teeth - This is also true, as birds have beaks instead of teeth. C. They are the closest extant relatives to dinosaurs Show more…
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Which of the following is not true about Hox genes? They encode signaling proteins important in organogenesis. They help organize body plans. As animal taxa (groups of evolutionarily-related organisms) evolved, they have migrated to other chromosomes and been duplicated. All of these are true about Hox genes.
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