Questions

Anything which is circular shape has no beginning, no middle or no end. 

The food like donuts have no beginning, end or middle. 

The supply curve slopes upward because for reflecting the higher price needed to cover the higher marginal cost of production. 

A reverse transcriptase (RT) is an enzyme used to generate complementary DNA (cDNA) from an RNA template by a process called Reverse Transcription.

In brief its function is that copies all or part of the virus RNA (retroviruses are RNA-only) as DNA which can then be integrated into the DNA of the host organism.

The new governor of Andhra Pradesh is Biswa Bushan Harichandan. He is a senior BJP leader and will succeed ESL Narasimhan, who had held the gubernatorial post in various states for last 13 years which includes 10 years in Andhra Pradesh.

Asterias has bilateral symmetry only at larval stagebut fivefold symmetry (pentamerism, a special type of radial symmetry) as adults.

Nereis do not possess any symmetry elements in their body organisation.