Loss-of-function mutations in which of the following genes typifies colorectal carcinomas?

a. myc              b. K-ras                       c. p53              d. APC

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#Question id: 5433

#SCPH06 I Botany

Two varieties of maize averaging 120 and 80 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 100 inches in height. If height is control by 3 pair of polygene, what is proportional of averaging phenotype in their F2 progeny?

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#Question id: 3281

#SCPH06 I Botany

One population X has 750 AA, 0 Aa, and 250 aa; the other Y has 500 AA, 500 Aa, and 0 aa. After one generation of random mating, the genotype frequencies X and Y respectively if the population size remains 1,000.

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#Question id: 4964

#SCPH06 I Botany

Which of the following statements provides the strongest evidence that prokaryotes evolved before eukaryotes?

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#Question id: 8921

#I Life Science/ Life Sciences Group – I-V

Evidence of which structure or characteristic would be most surprising to find among fossils of the Ediacaran fauna?

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#Question id: 4305

#SCPH05 I Biotechnology

Which of the following molecules is a protein produced by a regulatory gene?