When testing a technological design, you may sometimes need to use a model instead of the real thing. true or false?

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?

This is so important ugh its 25 points

If a checkpoint detects damaged dna, the checkpoint may