1. lipoproteins
2. steroids
3. prostaglandins
4. glycoproteins
glycoproteins
1. B-lymphocytes
2. leucocytes
3. thrombocytes
4. helper T-lymphocytes
helper T-lymphocytes
1. low in yield
2. free from intraspecific competition
3. characterised by poor root system
4. highly prone to pests
highly prone to pests
1. coelomic fluid
2. haemolymph
3. slimy mucus
4. excretory fluid
coelomic fluid
1. Escherichia coli and Agrobacterium tumefaciens
2. Vibrio cholerae and a tailed bacteriophage
3. Diplococcus sp. and Pseudomonas sp.
4. Crown gall bacterium and Caenorhabditis elegans
Escherichia coli and Agrobacterium tumefaciens
1. overdominance of this type on the genes for A and B types
2. one antibody only - either anti-A or anti-B on the RBCs
3. no antigens A and B on RBCs
4. other antigens besides A and B on RBCs
no antigens A and B on RBCs
1. bacterium
2. prion
3. worm
4. virus
prion
1. rye
2. pearl millet
3. sugarcane
4. barley
rye
1. protoplast culture
2. embryo rescue
3. anther culture
4. meristem culture
meristem culture
1. IAA
2. GA
3. IBA
4. NAA
NAA