Frieda is developing a computer model of mutations in human dna. she plans for the model to incorporate one point mutation for every 10 million base pairs of dna, which is a rate that is supported by her research. however, her advisor argues that mutations could occur 100 times more frequently under certain circumstances.
a) true
b) false

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?