<span>Three anatomical features that birds share with their theropod ancestors are:
</span><span>1. they had light, hollow bones
</span>2. they rearranged hip and leg muscles because this of <span>improved bipedal movement
</span>3. they had their flight oriented with the use of wings for balance
Deletion- the fact that a codon is missing implies that the nucleotides were deleted.
C. her cerebellum in the center of her brain started it by coordinating her muscle movements
