Reflecting on the Article What do you think is the central question left unanswered by many origin of life theories?

How do you date a sample of rock that you suspect as being one of the earliest on earth

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints