The thinning and spreading of the animal cap cells over the vegetal hemisphere, powered by proliferation and radial intercalation during gastrulation of amphibian, this process is known as___

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#Question id: 15223

#Unit 13. Methods in Biology

Which of the following method is particularly useful for separating isoenzymes 

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#Question id: 4730

#Unit 8. Inheritance Biology

Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?

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#Question id: 26902

#Unit 10. Ecological Principles

Which characteristics are considered the species that are more prone to extinction?

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#Question id: 12483

#Unit 2. Cellular Organization

ATM and ATR are protein kinases that become activated following specific types of DNA damage. 

A. ATM becomes activated in response to double‐strand breaks, which are detected by the MRN protein complex. 

B. ATR becomes activated by protein‐coated ssDNA that forms when replication forks become stalled or the DNA is being repaired after various types of damage.

C. ATR phosphorylates and activates the checkpoint kinase Chk2, which phosphorylates p53. D. ATM phosphorylates and activates the checkpoint kinase Chk1, which phosphorylates and inactivates the phosphatase Cdc25.

Which of the following combination is incorrect?

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#Question id: 15851

#Unit 5. Developmental Biology

In Drosophila, the X chromosome appears to encode four protein factors that activate the early promoter of Sxl. Which of the following factor activate JAK-STAT pathway?