1. How do bacteria acquire genetic variation and how does that differ from the m

Question

1. How do bacteria acquire genetic variation and how does that differ from the mechanism by which humans acquire variation?

2. Be able to explain why the following statement is true: Natural Selection works on individuals while evolution works on populations over generations. Or to put it another way: Individuals do not evolve, populations do.

3. How can evolution explain the formation of complex structures such as the eye or the flagella motor?

4. What causes variation in a species? To put this another way: all humans have the same genes, yet we do not look alike. What is the reason for the phenotypic differences between individuals of the same species? What is genetic recombination?

Explanation / Answer

1. Bacteria can aquire genes from other organism in which they have replicated for example if they entern ahuman being they wil replicate accordingly and will get variation according to that human being but if bacteria enterns a different species say monkey they have different genetic makeup so the variation is different . in humans variations is due the replication ,mutation or meiosis which is very different from bacterial variation

2. in case of calamit or nature's test it is upto each individual that how will they respond. for exapmle if you spray DDT over a population of 100 ants. it is not necessary that every ant will die becaue it was an indivial fit for survival , but evolution is a more complex and generalized phenomenon. it takes a lot of time to evolve and should to seen in a population sample to confirmed that the organism has evolved for aparicular trai

3 Need is the mother of every evolution . whenver a organism faces natural hinderences they start finding solution for it which modifies there body and which inturn after a ong time and many generation if that astruggle continues will become a feature of evolution

4.It is okay to say we all have same gene pool , but it's arrangeent is different which gives diferent phenotypic expression for everyone. moreover the genes divide and recombine many a time sin life. when in meiosis the cells divide and combine they form different seqences.

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