In the 1960s, Lynn Margulis published her research on the evolution of mitochondria and chloroplasts in eukaryotic cells in what is now known as the –

Describe two recent or ongoing space missions.

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above