If the frequency of PKU among newborns is approximately 1/10,000 (when the parents are unrelated). What is the risk of a child with PKU if the parents are uncle and niece?

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#Question id: 15332

#Unit 4. Cell Communication and Cell Signaling

At the surface of B-cell contain antibody- IgM and IgD, How is the formation of IgD from IgM?

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#Question id: 2895

#Unit 2. Cellular Organization

Match the following histone modifying enzymes with the respective functions they catalyze.

          COLUMN I                                            COLUMN II

1. NuRD, SIR2 complex                a. Histone Acetyltransferase Complexes

2. LSD1, JHMD3                             b. Histone Deacetylase Complexes

3. SUV39, DOT1                            c. Histone Demethylases

4. P300/CBP, PCAF                       d. Histone Methyltransferases

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#Question id: 1432

#Unit 4. Cell Communication and Cell Signaling

Which of the following proteins involved in angiogenesis is paired correctly with its function?

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#Question id: 12798

#Unit 10. Ecological Principles

Which of the following statements best describes the interaction between fire and ecosystems? 

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#Question id: 5258

#Unit 8. Inheritance Biology

Which of the following processes are not correct for conjugation?