Notice that the first amino acid in the hbb protein starts with a valine (val) instead of a methionine (met). what is the most likely explanation for this based on what we have discussed about gene expression?
(a) blood cells have a completely different way of starting translation in all their genes.
(b) the messenger rna for hbb carries a mutation in the start codon.
(c) the start codon for the gene is one of the codons for valine (i. e. gua, guc, gug or guu).
(d) the protein that is first made gets modified afterwards

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.