Some of the offspring from the original dark moth were also dark what cause this?

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d. a round-trip ride to school and back

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?