1- In Mendel\'s dihybrid cross of yellow, smooth peas with green, wrinkled peas,
ID: 40721 • Letter: 1
Question
1-
In Mendel's dihybrid cross of yellow, smooth peas with green, wrinkled peas, 9/16 of the F2 progeny has yellow, smooth peas. What proportion of these yellow, smooth pea plants were heterozygous for both genes?
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What proportion of offspring from a cross between two AaBbCcDdEeFf individuals would exhibit the dominant phenotype for all traits?
3-
A researcher planted 100 seeds from an F2 cross of two hybrid purple flowered plants and got 72 purple flowered progeny and 28 white flowered progeny. What was the Chi- Square value for this result?
In Mendel's dihybrid cross of yellow, smooth peas with green, wrinkled peas, 9/16 of the F2 progeny has yellow, smooth peas. What proportion of these yellow, smooth pea plants were heterozygous for both genes?
2-
What proportion of offspring from a cross between two AaBbCcDdEeFf individuals would exhibit the dominant phenotype for all traits?
3-
A researcher planted 100 seeds from an F2 cross of two hybrid purple flowered plants and got 72 purple flowered progeny and 28 white flowered progeny. What was the Chi- Square value for this result?
Explanation / Answer
In Mendel's dihybrid cross of yellow, smooth peas with green, wrinkled peas, 9/16 of the F2 progeny has yellow, smooth peas. Among these proportion 4 out 16 or 4/16 were yellow, smooth pea plants were heterozygous for both genes. For a single trait (AA) the proportion of homozygous dominant offsprings expected will be
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