Q1 of 41 Page 190

What are variations? How do they help organisms? (AS1)

Variation can be defined as the differences among individuals within a same species which develops due to the mixing and assortment of genes of the parents that is passed onto the offspring’s. This helps in the individualism of any organism from the other organisms of same species or within a community.


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2

One student (researcher) wants to cross pure tall plant (TT) with pure dwarf (tt) plant, what would be the F1 and F2 generations? Explain. (AS1)

 3

One experimenter cut the tails of parent rats, what could be the traits in offsprings? Do the daughter rats contain tails or not? Explain your argument. (AS1)

 4

In a mango garden, a farmer saw one mango tree with full of mango fruits but with a lot of pests. He also saw another mango tree without pests but with few mangoes, But the farmer wants the mango tree with full of mango fruits and pest free. Is it possible to create new mango tree which the farmer wants? Can you explain how it is possible? (AS1)

 5

Explain monohybrid experiment with an example, which law of inheritance can we understand? Explain. (AS1)