How do mRNA vaccines work?

How was the climate when the ambulocetus was alive

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.