The use of restriction enzymes as a tool for recombining, or joining, different DNA fragments was first illustrated in yet another classic paper, this time by Stanford University researchers Janet Mertz and Ronald Davis (Mertz & Davis, 1972).
Averages for Puerto Vallarta in February. The temperatures are still very warm in Puerto Vallarta, Mexico, in February, even though itâs still winter. Thanks to the cityâs location close to the equator, it enjoys good weather all year round providing the perfect place to head for a winter beach break â it certainly beats the cold European winter.
If it is the one in Puerto Plata, the weather in February is actually very nice, warm, not too humid, but it may rain a bit in the early morning and late at night. Other than that, it is usually sunny and warm. If you're looking for the one in Punta Cana, I suggest you post directly on the Punta Cana forum.