In the absence of gibberellin, the DELLA proteins

a) positively regulate GID1, GA20ox, and GA3ox

b)negatively regulate GA2ox

c) positively regulate GA2ox

d)negatively regulate GID1, GA20ox, and GA3ox

Which of the following is correct

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#Question id: 3700

#Unit 3. Fundamental Processes

In the Meselson-Stahl DNA replication experiment, if the cells were first grown for many generations in 15N containing media, and then switched to 14N containing media, what percent of the DNA had 1 light strand and 1 heavy strand after 2 generations of growth in 15N growth media?

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#Question id: 2984

#Unit 2. Cellular Organization

Certain unicellular eukaryotes, including diatoms and some yeasts, have mechanisms of nuclear division that may resemble intermediate steps in the evolution of mitosis. Which of the following is a characteristic feature of nuclear division in these organisms?

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#Question id: 28718

#Unit 2. Cellular Organization

Purified Clathrin molecules, which have a three-limbed shape structure are called____

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#Question id: 14976

#Unit 2. Cellular Organization

Plasmids are not required for host growth and reproduction, although they may carry genes that give their bacterial host a selective advantage. Plasmid genes can render  bacteria 

1. Drug-resistant 

2. Give new metabolic abilities 

3. Make them pathogenic

Which among the following combinations is correct?

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#Question id: 5451

#Unit 8. Inheritance Biology

High heritability is best demonstrated in which of the following situations?