Define and design a mohohybrid cross.

Define and design a test − cross?

During a mohohybrid cross involving a tall pea plant with a dwarf pea plant, the offspring populations were tall and dwarf in equal ratio. Work out a cross to show how it is possible.

Define a food chain. Design a terrestrial food chain of four trophic levels. If a pollutant enters at the producer level, the organisms of which trophic level will have the maximum concentration of the pollutant in their bodies ? What is this phenomenon called ?

Define test cross and back cross. Give the significance of each of these.

Define crossing over.

Thymine can also be designated as