What is a gene ? A. a series of amino acids
B. a segment of a dna molecule
C. a series of dna molecule
D. a segment of a protien

Which sequence correctly shows the path of carbon dioxide during repiration?

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?