If the dna in every cell for one individual the same, how is it possible to have different cell types with different phenotypes of physical features?

Genes are turned "on" and "off" to code for specific proteins.

Explanation:

The DNA is the genetic make up of the cell and contains the genetic material that code for genes, proteins and the whole functioning of the organism. The DNA in every cell is usually the same, but the reason why we have different cell, organs and systems functioning differently is because of the genes which are turned off or on. For instance in the eye, the gene for the retina will be turned on while that in the muscle will be silenced or turned off. Tge genes needed are turned on to code for proteins that carry out the desired function thus creating diversity and specialization in functions.

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…