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In some plants, a red pigment, cyanidin, is synthesized from a colorless precursor. The addition of a hydroxyl group (-OH) to the canidin molecule causes it to become purple. In a cross between two randomly selected purple plants, the following results are obtained: 94 purple: 31 red: 43 colorless. How […]

Answer in one word or sentence: 1. Which plant group is known as amphibian in the Plant Kingdom? 2. Name the two types of bryophytes. 3. On what basis algae are further classified? 4. Give one word for the following: i. Plants with hidden reproductive organs ii. Hair-like outgrowth of […]

Use the following information for the next 2 questions. Pigeons have two alleles of a single gene that determines whether they have feathers on their lower legs. The alleles are called no grouse (associated with the featherless phenotype) and grouse (associated with feathery legs). Suppose a pigeon that is homozygous […]

Mrs. Ryan, a middle-aged woman, appears at the clinic complaining of multiple small hemorrhagic spots in her skin and severe nosebleeds. While taking her history, the nurse notes that Mrs. Ryan works as a rubber glue applicator at a local factory. Rubber glue contains benzene, which is known to be […]