Bean plants may have different symptoms when infected with a virus. Some show local lesions that do not seriously harm the plant; others show general systemic infection. The following genetic analysis was made:P: local lesions x systemic infectionF1: all local lesionsF2: 785 local lesions : 269 systemic infection What is […]

In dogs, dark coat (D) is dominant over albino (d) and short hair (S) is dominant over long hair (s). After crossing dogs with dark and short hair with albino dogs with long hair, in F2 a breeder got 89 dogs with dark and short hair, 31 dark, long hair, […]

1. E coli is a shortened name for a bacterium that lives in our gut. According to the rules of binomial nomenclature it is properly written as _______________.a. Escherichia COLIb. Escherichia Colic. Escherichia colid. escherichia colie. escherichia coli 2. What does the term “biodiversity” refer to in the field of […]

Question: A corporation has invented a new low-calorie sugar substitute. They want to determine if the substitute might be carcinogenic, so they use it in the Ames test with Salmonella his- mutants. The results show no increase in mutant bacterial colonies. They then perform feeding experiments in laboratory rats and find […]