Why are the palisade cells on the top of the leaf?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

The production of cells during mitosis into specialized function is recombination or differentiation

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.