Listeria bacteria can contaminate fresh produce, like cantaloupes, as well as some processed foods, like cheeses. Symptoms of infection include fever, muscle aches, upset stomach, or diarrhea -- occurring 2 days to 2 months after exposure. Safety: Scrub raw produce and dry before cutting.
Here the relation between genotype and phenotype is illustrated, using a Punnett square, for the character of petal colour in a pea plant. The letters B and b represent genes for colour and the pictures show the resultant flowers.n the case of an albino with a recessive allele (aa), the phenotype depends upon the other allele (Aa, aa or AA). An affected person mating with a heterozygous individual (Aa or aA, also carrier) there is a 50-50 chance the offspring will be albino's phenotype.
1. A boy, whose parents and grandparents had normal vision, is color-blind. What are the genotypes for his mother and his maternal grandparents. Use XB for the dominant normal condition and Xb for the recessive, color-blind phenotype. Mother: XBXB XBXb XbXb Grandmother: XBXB XBXb XbXb Grandfather: XBY XbY 2. The bison herd on Konza Prairie has begun to show a genetic defect.