What difference between heterozygous and homozygous?

How do chloroplasts set plants apart from other living things

Which statement best describes lactic acid fermentation? a. lactic acid fermentation is the first step of cellular respiration. o b. lactic acid fermentation is the final step of cellular respiration. re to berate c. in the absence of oxygen, cells release atp by breaking down lactose into glucose. e der lade res o d. in the absence of oxygen, cells release atp by breaking down glucose into lactate. ar

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