Heredity and Evolution

Evolution and Classification

February 14, 2019 By Mrs Shilpi Nagpal 3 Comments

Question 1 Define the term analogous organs, vestigial organs and homologous organs? Question 2 Why is artificial selection beneficial? Question 3 Why are acquired characters not inheritable? Question 4 Differentiate between artificial and natural selection? Question 5 How can you explain the existence of analogous organs? Question 6 What is the most reliable … [Read more...] about Evolution and Classification

Evolution and Speciation

February 13, 2019 By Mrs Shilpi Nagpal 1 Comment

Question 1 Define speciation? Explain mechanism of speciation? Question 2 Define evolution?Why are traits acquired during the lifetime of an individual not inherited? Question 3 What is organic evolution and inorganic evolution? Question 4 What is genetic drift? Give its significance in evolution? Question 5 What is variation? Question 6 What are inherited and … [Read more...] about Evolution and Speciation

Origin of Life

February 9, 2019 By Mrs Shilpi Nagpal 1 Comment

Question 1 Explain the Miller and Urey simulation experiment for organic synthesis? Question 2 Name the theories put forward for the origin of life? Question 3 Explain the Cosmozoic or interplanetary theory? Question 4 Explain the Theory of special creation? Question 5 Explain the Abiogenic or naturalistic theory? Origin of Life Fundamental characteristics of … [Read more...] about Origin of Life

Structure of DNA

February 8, 2019 By Mrs Shilpi Nagpal Leave a Comment

Question 1 Give important features of the double helical model of DNA proposed by Watson and Crick? Question 2 What is a gene? Question 3 Explain XX-XY type of sex determination in human beings? Question 4 Give examples where environmental factors govern the sex determination? Question 5 Define the term homogametic and heterogametic? Question 6 Mention few … [Read more...] about Structure of DNA

Mendel’s Contribution

February 7, 2019 By Mrs Shilpi Nagpal 3 Comments

Question 1 Define the term heredity, variations and genetics? Question 2 Why Mendel selected garden pea plant for his experiments? Question 3 Explain the Mendel monohybrid cross? Question 4 Explain the Mendel dihybrid cross? Question 5 Explain the contribution of Mendel in Genetics? Question 6 State law of segregation ? Question 7 State law of independent … [Read more...] about Mendel’s Contribution