Table 1 Expected and observed frequencies of offspring from crossing Kras+/C118S mice.

From: Decreased tumorigenesis in mice with a Kras point mutation at C118

Kras genotype

Expected frequency

Observed frequency

+/+

25% (145/580)

26.72% (155/580)

+/C118S

50% (290/580)

47.93% (278/580)

C118S/C118S

25% (145/580)

25.34% (147/580)

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