Unit 2 heredity course activity: genetic models
part a: punnett square
1. identify the dominant and recessive traits (5 points).
1. write the genotype of an individual who is heterozygous for both shape and color (5 points).
2. what are the genotypes of the parents who produced this offspring (5 points)?
3. write the two genotypes for this phenotype: wrinkled yellow pea (5 points).

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?