evidences of evolution

HEREDITY AND EVOLUTION EXERCISE QUESTIONS

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HEREDITY AND EVOLUTION EXERCISE QUESTIONS   Q.2 Read the following statements and justify a)   Human evolution began approximately 7 crore years ago. The last dinosaurs disappeared approximately 7 crore year ago due to changes in environmental conditions. Monkey like animals evolved from lemur – like ancestors 4 crore years ago – The tail of these … Read more

Heredity and Evolution Notes

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HEREDITY AND EVOLUTION NOTES Heredity and Evolution Notes Basic Concepts – Gene – It is the basic physical and functional unit of heredity. Chromosome – It is a DNA molecule that consists of a part or all of the genetic material of an organism. OR  It is the microscopic threadlike part of the cell that … Read more