A Student Proposes That Left-Handedness Is a Recessive Trait That

question 58

Multiple Choice

A student proposes that left-handedness is a recessive trait that is therefore hidden in much of the human population.A survey of a class of 36 students finds that 27 (0.75) are right-handed and 9 (0.25) are left-handed.Using the Hardy-Weinberg formula,what would the expected genotype and allele frequencies be in this theoretical population?

• A)0.75 right-handed homozygous dominant and 0.25 recessive homozygous for 3-to-1 right- to left-handed alleles in the population
• B)0.25 right-handed homozygous,0.50 heterozygous,and 0.25 recessive homozygous for a 3-to-1 right- to left-handed alleles in the population
• C)0.25 right-handed homozygous,0.50 heterozygous,and 0.25 recessive homozygous for a 0.5 allele frequency for each allele
• D)0.50 right-handed homozygous,0.25 heterozygous,and 0.25 recessive homozygous for a 0.5 allele frequency for each allele
• E)They cannot be estimated using these limited data.

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