PLEASE HELP ME GUYS ! What line up during mitosis metaphase at the metaphase plate?
a) Homologous chromosomes
Ob) Sister chromatids
c) Aster
d) Microtubes

Mutations associated with albinism affect proteins involved in synthesis

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!