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MatroZZZ [7]
3 years ago
9

Several biology students are counting kernels in an ear of corn. They count a total of 420 kernels: 242 purple wrinkled, 84 purp

le smooth, 70 yellow wrinkled, and 24 yellow smooth. What is the ratio of kernel phenotype in this case? A) 3:2:2:1 B) 8::4:2:1 C) 9:3:3:1 D) 24:8:7:2
Biology
2 answers:
Marina86 [1]3 years ago
8 0

the answer is c good liuck

s2008m [1.1K]3 years ago
6 0
The answer is C) 9:3:3:1

This looks like a dihybrid cross where the expected phenotypic ratio is 9:3:3:1. However, in nature, the numbers cannot be absolut. Let's check it out:
242 purple wrinkled
84 purple smooth
70 yellow wrinkled
24 yellow smooth

Divide all by the smallest number:
242 purple wrinkled / 24
84 purple smooth / 24
70 yellow wrinkled / 24
24 yellow smooth / 24

We have 
10.1 purple wrinkled which is near to 9
3.5 purple smooth which is near to 3
2.9 yellow wrinkled which is near to 3
1 yellow smooth
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