Over the summer you discover a three eyed, fly with legs coming out of its head instead of antennas. To determine how close these alleles (eye trait, legs-on-head trait) are to each other on the same chromosome, you cross this true breeding fly with a normal (2-eyed, antennae) fly. The F1 generation is all wildtype. You then backcross an F1 animal to the original mutant animal which generates; 500 normal flies, 50 2-eyed, head-legged flies, 76 three-eyed, antenna flies and 400 three-eyed, head-legged flies. How far apart are these genes

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

D, capsid protien, its the protein shell of a virus.