Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? 

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#Question id: 1238

#Unit 4. Cell Communication and Cell Signaling

Which of the following can lead to loss-of-heterozygosity in a tumor-suppressor gene?

a. deletion of the normal copy                       

b. non dysjunction during mitosis

c. somatic mutation of the normal copy

d. mitotic recombination between a wild-type and mutant allele

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#Question id: 15410

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

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#Question id: 19185

#Unit 13. Methods in Biology

Which of the statement hold true for Quantitative PCR?

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#Question id: 15418

#Unit 5. Developmental Biology

In which type of interaction, the responding tissue has already been specified and needs only an environment that allows the expression of particular traits?

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#Question id: 11194

#Unit 7. System Physiology – Animal

The "threshold" potential of a membrane is the ________.