Which of the following is not part of a molecule of dna?
deoxyribose
nitrogen base
phosphate
ribose

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?