Correct order of Step for X-chromosome inactivation is 

a. Xic generate xist RNA 

b. xist RNA wrapped over X chromosome 

c. MacroH2A recruited and xist RNA removed 

d. wrapped xist invites PRC2/1 complex

e. PRC2/1 complex  leads to H2AK119ub1 H3K27me3 H4K20me1

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#Question id: 4785

#Unit 8. Inheritance Biology

One form of white eye is a recessive X-linked gene in Drosophila. From a mating of a heterozygous wild-type Drosophila female with a white-eyed male, what is the probability of wild type offspring?

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#Question id: 15742

#Unit 5. Developmental Biology

Which of the following  hormone enables the development of the Müllerian duct into the uterus, oviducts, cervix, and upper portion of the vagina?

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#Question id: 4431

#Unit 3. Fundamental Processes

Which of the following transcription factors enhance transcription without binding to DNA? 

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#Question id: 735

#Unit 1. Molecules and their Interaction Relevant to Biology

The a-keratin chains indicated by the diagram below have undergone one chemical step. To alter the shape of the a-keratin chains—as in hair waving—what subsequent steps are required?

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#Question id: 28638

#Unit 2. Cellular Organization

S phase cyclin-CDKs are inactivated by binding of given which CKIs inhibitor?