La sistemática molecular La sistemática molecular es el uso de la genética molecular para estudiar la evolución de las relaciones entre individuos y especies. El
objetivo de los estudios sistemáticos es proporcionar información sobre la historia de los grupos de organismos y los procesos
entrelas especies.
Durante miles de años, los naturalistas han mirado el mundo e intentado describir y explicar la diversidad biológica. Este intento
de examinar y clasificar se llama sistemática, un sistemapara imponer un orden cognoscible en el “aparente caos” de la
naturaleza
Las técnicas moleculares utilizan una variedad de técnicas para construir los árboles filogenéticos. La-Reacciónencadenade
laenzimapolimerasa (PCR)- se usa por ejemplo, para investigar las variaciones del ADN a gran escala entrediferentes
organismos
La amplificación génica también es una técnica
comohuellasdelADN.
Los científicos pueden usar “relojes moleculares” para predecir algunas divergencias moleculares pasadas y/o
futurasentrelosgenes. Estateoríaafirmaqueelcambio molecular es lo suficientemente constante para determinar la
forma como los linajes genéticos se ramifican a partir de un antepasado común y para determinar cuándo se
produjo dicha ramificación.

Explica el impacto del desarrollo de las técnicas moleculares en los sistemas de clasificación de los organismos. ayud

Science27 of the most iconic, jaw-dropping photos of the earth and the moon from spacedave mosher  oct 1, 2018, 11: 13 am etnasa/flickrapollo 11 astronauts took this photo of earth on july 20, 1969.from the ground, earth looks like a boundless fertile plain that beckons to be explored and exploited.but astronauts would beg -  and even plead  - to differ."you realize that people often say, 'i hope to go to heaven when i die,'" jim lovell, an astronaut who flew on the apollo 8 and apollo 13 missions to the moon, previously  told business insider. "in reality, if you think about it, you go to heaven when you're born."lovell has seen first-hand that we live on a tiny rock hopelessly lost in the void. he's also quick to tell you it's the only one we've got - a  fragile spaceship  for more than 7 billion people: "you arrive on a planet that has the proper mass, has the gravity to contain water and an atmosphere, which are the very essentials for life. and you arrive on this planet that's orbiting a star just at the right distance - not too far to be too cold, or too close to be too hot - and just at the right distance to absorb that star's energy and then, with that energy, cause life to evolve here in the first place. in reality, you know, god has really given us a stage, just looking at where we were around the moon, a stage on which we perform. and how that play turns out is up to us, i guess."humanity has recorded photos of earth from hundreds, thousands, millions, and even billions of miles away, some of them taken by lovell himself.these images not only scientists study our dynamic world, but also understand how a habitable planet looks from afar, which aids the search for  more worlds. most importantly, however, the images underscore our peculiar existence on  a mote of cosmic dust.take a moment to ponder 27 of the most arresting images of earth that humankind has ever captured from space.a