In a species, only 1 of every 1000 seeds survives to reproductive age, and that those that survive produce an average of 3000 seeds , what will be the average fitness of  species ?

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#Question id: 4343

#Unit 3. Fundamental Processes

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?

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#Question id: 28332

#Unit 5. Developmental Biology

In drosophila, transition from specification to determination is mediated by ____

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#Question id: 685

#Unit 1. Molecules and their Interaction Relevant to Biology

A protein has a molecular weight of 5600 daltons; its subunits are about 1960 daltons. There are ________ protein chains per oligomer.

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#Question id: 19110

#Unit 8. Inheritance Biology

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 siblings?

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#Question id: 3660

#Unit 3. Fundamental Processes

Which of the following is true for exchange of homologous regions between two DNA molecules?