With 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.
Nucleopolyhedro viruses play a significant role in an ecological sensitive area. These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects.
How have transgenic animals proved to be beneficial in:
(a) Production of biological products
(b)Chemical safety testing.
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.