Quasars are thought to be the centers of a. distant nebulas. c. distant galaxies. b. distant constellations. d. distant clusters.

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.

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities