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Genotype and phenotype Original Scenario-Based Practice

Biology · Heredity · Biology · Mendelian Genetics

1 Biology practice questions on Genotype and phenotype. Questions built around original scenarios.

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  1. 1.

    On a remote alpine research station, xenobiologist Dr. Sarek documents two newly cataloged frost-foxes, both displaying an identical shimmering sapphire coat. Genetic analysis reveals that one individual carries two copies of the dominant allele (BB), while the other carries one dominant and one recessive allele (Bb). Based on Mendelian genetics, which statement correctly characterizes the relationship between their genotype and phenotype?

    • A) Both foxes share the same genotype, but their contrasting molecular alleles produce different biochemical phenotypes.
    • B) Both foxes exhibit the identical phenotype despite possessing different underlying genotypes.
    • C) The heterozygous fox displays an intermediate phenotype because its genotype lacks two dominant alleles.
    • D) Phenotype directly determines genotype, ensuring that both foxes will produce identical offspring in all crosses.

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