Short Answer TypeWith the help of one example, explain the phenomena of co-dominance and multiple allelism in human population.
Write the scientific name of the fruit-fly. Why did Morgan prefer to work with fruit-flies for his experiments? State any three reasons.
Linkage or crossing-over of genes are alternatives of each other. Justify with the help of an example.
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
How have transgenic animals proved to be beneficial in:
(a) Production of biological products
(b)Chemical safety testing.
(a) Transgenic animals can be used for the production biological products which are otherwise expensive to make. For example Rosie the transgenic cow produced human protein enriched milk. The milk contained human alpha-lactalbumin and thus was nutritionally more balanced for human babies than natural cow milk.
(b)Transgenic animals are made that carry genes which make them more sensitive to toxic substances than non-transgenic animals. They are then exposed to the toxic substances and the effects studied. Toxicity testing in such animals will allow us to obtain results in less time.
Describe the mutual relationship between fig tree and wasp and comment on the phenomenon that operates in their relationship.
Construct an age pyramid which reflects an expanding growth status of human population.
Make a list of any three out breeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Switch
