Does Genesis 30:25-43 defy genetics?

Genesis 30:25-43 is the story about Jacob's flock increasing by making streaks on Laban's goats using wood branches, so that > they mated in front of the branches. And they bore young that were streaked or speckled or spotted. (Genesis 30:39, NIV) This just doesn't make sense. It doesn't even come close to the Lamarck's Evolution Theory . How is this possible?