The single stranded DNA fragments of two animals are given below. One of them is radioactively labelled. Observe the figure.
a. Predict these organisms are closely related or not.
b. Justify your answer.
c. Name the technique used to obtain this. What are its other advantages?

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons