The substance used to cut the bacterial DNA so that human DNA could be inserted is a A) lipid B) carbohydrate C) specific enzyme D) hormone

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

What is true for a substance that releases energy