43. Organisms that reproduce sexually display a high frequency of genetic variation. Which two
meiotic processes provide most of the genetic diversity of a species?
A. synapsis and separation
C. polar migration and cytokinesis
B. replication and condensation
D. independent assortment and crossing over

D. independent assortment and crossing over.

Explanation: Genetic diversity of a species occurs when crossing over of the chromosomes is done in the process of meiosis. In crossing over, the parts of chromosomes are exchanged between two different chromatids for the production of gametes due to which variation occurs in the organisms. So crossing over is very important for producing genetic variation among species.

the match lol

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.