Q. Even though it is thought that there are actually 7 loci involved in producing fingerprint ridges for the next two problems we will utilize a simpler 4 locus model. The loci are named A.B, C and D. There are two alleles at each locus. A capital letter indicates a […]

A regulator gene-minus strain of E. coli is constitutive for expression of the lac-operon because the repressor cannot bind tothe operator region even when lactose is present. By bacterialconjugation, it is possible to introduce into the regulator-minusstrain a wild type or regulator-plus gene, which can betranscribed. What effect does lactose […]

A five-month-old Caucasian female is brought into the clinic as the parent complain that she has been having ongoing foul-smelling , greasy diarrhea. She seems to be small for her age and a bit sickly but, her parent’s state that she has a huge appetite. Upon examination you find that […]

1. Why are pigments such as chlorophyll needed for photosynthesis? 2. How well would a plant grow under pure yellow light? Explain your answer. 3. What is the function of NADPH?  4. How is light energy converted into chemical energy during photosynthesis? 5. How would photosynthesis be affected if there […]