What is the (one) expected genotype(s) for the F1 generation? Which ratio should

Question

What is the (one) expected genotype(s) for the F1 generation?
Which ratio should they appear in the F2 (F1 x F1) generation? Procedure 13.2 Analysis of Genetic Corn Monohybrid cross: In corn, red (R) seed color is dominant to yellow (o) seed color. Examine an ean VR Rr record the following information for 5 rows of seeds. Do not remove the seeds from the ea Number of red seeds2 Number of yellow seeds Ratio of red-yellow seeds : r of corn. a R ?RR?Rr 2r Predicted genotypes of parents: Using the genotypes of the parents provided, draw the Punnett Square for this cross using the blank table above. D?hybrid Cross: working from the information above, also in corn, smoothness (S) is dominant to wrinkled (s) seed. Diagram a Punnett square with a cross of parents with genotypes RRSS and rrss. What is the (one) expected genotypes(s) for the Fi generation? Which ratio should they appear in the F2 (Fi x Fi) generation? 55 255 Test your prediction by counting5 rows of kernels (do not remove the corn from the ear) for the following phenotypes Number of Red, smooth Number of Red, wrinkled Number of Yellow, smoothO Number of Yellow, wrinkled12 How do your observations compare to your predictions?

Explanation / Answer

Ans 1: When RRSS and rrss crossed, all the offsprings (known as F1 generation) would be heterozygous with the genotype RrSs.

Ans2: When RRSS and rrss cross, the F2 progey of the dihybrid corss appeared as 9:3:3:1 ratio where Red Smooth were 9 in numbers, Red Wrinkle were 3 in numbers, Yellow Smooth also were 3 in numbers and Yellow Wrinkle was 1 in number.

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