Which statements explain how can use the similarities between current species and extinct organisms?

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.

Which experiment would most likely contain experimental bias ?

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?