Uncategorized

Dr. Ara B. Dopsis and Dr. C. Ellie Gans are performing genetic crosses on daisy plants. They self-fertilize a blueflowered daisy and grow 100 progeny plants that consist of 55 blue-flowered plants, 22 purple-flowered plants, and 23 white-flowered plants. Dr. Dopsis believes this is the result of segregation of two […]

1. Would two nucleotides at a time be sufficient to provide enough codons to code for all 20 amino acids? Why or why not? How many amino acids could be coded for by codons containing only two nucleotides? 2. Will three nucleotides per codon work? Why or why not? Explain […]

Question: Blue skin color in smurfs is controlled by two independent biochemical pathways (1 and 2). Pathway 1 has two enzymatic steps under the control of genes A and B respectively. The homozygous recessive state aa or bb blocks the formation of blue pigmentation by this pathway. Pathway 2 has one […]

1) A molecule which is lacking in lungs of the premature infant is the ______.  It functions to help to keep alveoli from collapsing.  Positive pressure equipment is necessary in such a situation. 2) Large folds in the stomach known ______ increase its surface area and also enable it to […]