Being able to roll the tongue is dominant over not being able to roll the tongue. What is the probability that the offspring will be unable to roll the tongue?

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

Give an example of a trait that is controlled by more than one gene.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.