The pedigree chart below shows the individuals in a family who exhibit a certain trait. based on the info in the chart, which of the following provides the best evidence that this is a recessive trait? a. couple 3-4 in the 2nd generation produced children who are identical twins. b. couple 1-2 in the second generation produced children who do show the trait. c. couple 1-2 in the 1st generation produced children who do show the trait. d. couple 3-4 in the 2nd generation produced children who do not show the trait.

The answer is A: Couple 3-4 in the 2nd generation produced children who do not show the trait. If it was a dominant trait, there would be a lot more children with said trait.

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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.