C:<span>Cellulose is the primary structural carbohydrate found in plant cell walls. Only a few animals have a limited ability to digest cellulose. However, </span>the fiber in the structural carbohydrates stimulates the animals' digestive systems<span>, so stools stay softer and move more quickly through the intestinal tract. This helps to prevent constipation and encourages regular defecation.</span>
It is not possible to determine the twins' behaviors based on having this single gene
Gymnosperms:- non-flowering,exposed seeds,pine or fir fruit.
angiosperms:- flowering,seeds enclosed in fruit,garden flowers and tomatoes
Human height is one of the traits that belong to traits that cannot easily be placed in discrete phenotypic classes (there is not only tall and short people, there is continuous variation of height between them). Such traits are usually controlled by more than one gene (polygenic traits).
On the other hand, a Mendelian trait is controlled by a single locus.