Fruits of a plant are produced when: a) xylem and phloem nourish dermal tissue

b) the ovary ripens

c) the stamen releases pollen

d) meristematic tissue grows at the root tip

In 1994, telomerase activity was discovered in human cancer cell lines. although telomerase activity is rarely present in human somatic tissue, this discovery indicated that humans do contain the genes for telomerase proteins and telomerase rna. since inappropriate activation of telomerase may contribute to cancer, why do you think the genes coding for this enzyme have been maintained in the human genome throughout evolution?