In corn, three dominant alleles, called A, C, and R, must be present to produce colored seeds. Which of the following genotype would produce 25 % color seeded plant, When cross with Aaccrr?

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#Question id: 31056

#Unit 4. Cell Communication and Cell Signaling

Raf and analogous MEK phosphorylating kinases in cells are often called: 

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#Question id: 15900

#Unit 12. Applied Biology

During development of a somatic embryo from a single superficial cell of the explant, the cells of this meristematic mass continue to divide to give rise to the various stages of SEs. Which of the following is considered correct for the development of SEs?

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#Question id: 28431

#Unit 5. Developmental Biology

Which of the following cells direct the movement of the primitive streak in avian development?

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#Question id: 18082

#Unit 8. Inheritance Biology

The interaction of selection and inbreeding in determining the incidence of autosomal recessive diseases. Consider a gene in which recessive mutations occur at a rate of 10^-5. Assume a selective disadvantage S of 0.4 in homozygotes for the recessive allele. Now assume that, for thousands of generations, 10% of all children have been products of first-cousin matings (the remaining 90% being products of random matings). Calculate the steady-state value of q. Also calculate the incidence of the disease at steady state. 

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#Question id: 4049

#Unit 3. Fundamental Processes

Which of the following are products of RNA polymerase II activity?

A. tRNA ___

B. microRNA ___

C. hnRNA ___

D. tRNA and microRNA ___