The genes for light eyes ( lt; light) and straw bristles ( stw; straw) are tightly linked on chromosome ii in drosophila melanogaster. the malpighian tubes of lt larvae and adults are maternally affected in that malpighian tubes of lt/lt organisms, whose mothers were lt+/lt and have more yellow pigment than those from lt/lt mothers. there is no maternal effect associated with the straw locus. give the phenotypes of the offspring from the following crosses. cross #1: lt stw/lt stw; lt+stw+/lt stw
cross #2: lt+ stw/lt stw; lt stw+/lt stw
cross #3: lt+ stw/lt stw; lt stw/lt stw

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.

Go into your kitchen and get some water or coolaid and warm up at hot dog

It is called the medulla oblongata or people usually call it medulla. it is the lower half of the brain stem continuous with the spinal cord.