In corn, three dominant alleles, called A, C, and R, must be present to produce colored seeds. Genotype A/–; C/– ; R/– is colored; all others are colorless. A colored plant AaCCRr is crossed with colorless plant aaCcRr. What proportional of offspring plant with colorless seed?

#Question id: 10791

#I Life Science/ Life Sciences Group – I-V

Following are certain statements regarding furanocoumarins;

 a) furanocoumarins have an attached furan ring

 b) These compounds are toxic until they are activated by sunlight in the ultraviolet A (UV-A) region (320–400 nm)  

 c) Light activated furanocoumarins can insert themselves into the double helix of DNA and bind to the pyrimidine bases, thus blocking transcription and repair and leading eventually to cell death   

 d) Phototoxic furanocoumarins are especially abundant in members of the Umbelliferae family, including celery, parsnip, and parsley.

 Which of the following combination from the above statements is correct?

#Question id: 1650

#SCPH05 I Biotechnology

Recombination of V, D, and J Ig gene segments:

#Question id: 372

#SCPH05 I Biotechnology

Carbon dioxide in the atmosphere dissolves with the raindrops. The pH of raindrops is ________.

#Question id: 16325

#I Life Science/ Life Sciences Group – I-V

#Question id: 11146

#SCPH28 | Zoology

If you experimentally increase the concentration of Na+ outside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential?