Which of the following is correct
Haemophilic-Y-chromosome
Down's syndrome-21' chromosome
Sickle cell anaemiaX-chromosome
Parkinson's disease-X and Y-chromosome
Genetically engineered bacteria are being employed for production of
thyroxin
human insulin
cortisol
epinephrine
Scientific name of sunflower is
Hibiscus rosa-sinensis
Solanum nigrum
Oryza sativa
Helianthus annuus
By which of the following methods, new and better varieties of plants can be formed
Selection
Grafting
Hybridization
Hybridization followed by selection
D.
Hybridization followed by selection
Hybridization and Artificial Selection. Breeders commonly use artificial selection to produce new breeds from the variable offspring of hybrid crosses. In particular, they have long used a process, known as the backcross breeding method, to obtain new types of organisms. The approach is to identify a type possessing some desirable trait and then to hybridize it with a "target stock" lacking the trait. If hybrids are obtained, the next step is to backcross them to the target stock in order to “introduce” the trait.
Chromosomes can be stained with one of the following chemicals
acetocarmine
safranine
light green
eosin
Which one of the following is the American poultry breed
Australop
Assel
Minorica
Rhod Island Red
Which of the following is an example of man-made ecosystem
Herbarium
Aquarium
Tissue culture
Forest
Which one of the following leucocytes transforms into macrophages
Eosinophil
Basophil
Monocyte
Lymphocyte