7. what is the main purpose of translation?
a. create a polypeptide strand directly from a dna strand
b. use the mrna strand as a template to bring in the appropriate amino acid strands to build a protein
c. use the trna strand to build rrna to make proteins
d. create an mrna strand from a dna template strand

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.

Which of your fossils are most likely heterotrophs? which of them are autotrophs? how do you know?