Answer 4,5,6 & sugary (B), yellow& starchy (C) and yellow& sugary (D) CAD C)W.P.

Question

Answer 4,5,6 & sugary (B), yellow& starchy (C) and yellow& sugary (D) CAD C)W.P. Amstrong 2001 1) Monohybrid Inheritance in Corn PartA-Monohybrid Selecress In this section you will examine corncobs expressing the results of the F2 generation of a set of crosses starting with parent plants that are true-breeding (homozygous) for purple kernels crossed with plants that are true- breeding (homozygous) for yellow kernels. When a true-breeding plant with purple kernels was crossed with a true-breeding plant with yellow kernels, the Fl cob had kernels that were all purple. Q1. What is the dominant trait in this cross? How can you tell? Q2. Using appropriate symbols, write the genotypes of the parents and the FI. Q3. Use a Punnett square to determine the expected genotypes, expected phenotypes, and expected percentages of phenotypes in the F2 generation when two F1 plants are crossed. Summarize your results in the table below Expected Phenotype Expected Genotype(s) Expected Phenotypic Proportions (%)

Explanation / Answer

4 -

4- I am counting first two row of the corn given in the figure.

5-

6-

Chi-square value = 0.19

Degree of freedom = number of alleles -1

so 2-1

1

For 1 degree of freedom where the p-value is 0.05 the chi-square value is 3.84.

The observed chi-square value is less than the chi-square value.

So corn follow Mendel's independent assortment

Observed phenotype Purple 20 Yellow 6 26

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