Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability ?
Iodine - Goitre
Protein - Kwashiorkor
Thiamine - Beri-beri
Pellagra is a disease caused by the deficiency of nicotinamide or nicotinic acid or niacin or vitamin B3. It is common among individuals eating food with low tryptophan. The symptoms of pellagra are inflammation of skin or Dermatitis, diarrhoea and dementia.
The molecular structure of insulin was first described by :
Phytochrome occurs in two forms. In which form it promotes the germination of seeds of some species ?
None of these
Insect resistance transgenic cotton has been produced by inserting a piece of DNA from:
a wild relative of cotton
Mutations which alter nucleotide sequence within a gene are :
frame shift mutations
base pair substitutions
both 'a' and 'b'
none of these
Which organism was used by Beadle and Tatum to proposed one gene-one enzyme hypothesis ?
When a tall plant with rounded seeds (TTRR) is crossed with a dwarf plant with wrinkled seeds (ttrr), the F1 generation consists of tall plants with rounded seeds. How many types of gametes an F1 plant would produce ?
Diadelphous stamens are the characteristic features of :
Human immuno deficiency virus causes
Acquired immuno deficiency syndrome