please help me , I think i did #10 wrong 7) What are the potential phenotypes fo

Question

please help me , I think i did #10 wrong

7) What are the potential phenotypes for your F1 cross ello smooth 8) What ratio do the F2 phenotypes have for your F1 cross? yeto. ye ello Smooth 9) The corn cobs in front of you represent the results of your F1 cross. You will count the phenotypes of each of the F2 progeny from your cross (corn kernels). Record the phenotypes in the chart below: uellots Smooth ellos wainke 309 31 10) Calculate the ratio for each of the phenotypes present on your corn cob and recor d below purplo wsin 3.9o yellow vwrinuad 24l yellowt smot h

Explanation / Answer

7) This is a dihybrid cross in corns taking two traits. The yellow color (Y) is dominant over purple (y) and smooth (S) is dominant over wrinkled (s). The potential phenotypes obtained are yellow smooth, yellow wrinkled, purple smooth and purple wrinkled.

8) The ratio of yellow smooth, yellow wrinkled, purple smooth and purple wrinkled is 4:2:2:1.

9) The number of phenotypes in yellow smooth is 309. The number of phenotypes in yellow wrinkled is 78, in purple smooth is 73 and purple wrinkled is 31.

10) Yellow smooth = 309/(309+78+73+31) = 309/491 = 0.63

Yellow wrinkled = 78/491 = 0.16

Purple smooth = 73/491 = 0.15

Purple wrinkled = 31/491 = 0.06

Therefore, the ratio is 6.3: 1.6: 1.5: 0.6

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