HEREDITY
THE PEDIGREE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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crossing pea plants
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breeding fruit flies
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cutting off the tails of mice
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growing bacteria in a laboratory
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Detailed explanation-1: -By experimenting with pea plant breeding, Mendel developed three principles of inheritance that described the transmission of genetic traits, before anyone knew genes existed. Mendel’s insight greatly expanded the understanding of genetic inheritance, and led to the development of new experimental methods.
Detailed explanation-2: -However, Austrian monk Gregor Mendel was unconvinced with traditional explanations of how traits were passed from one generation to another. Between 1856 and 1863, Mendel decided to try and work out the principles of heredity himself, with the assistance of the humble garden pea (Pisum sativum L.).
Detailed explanation-3: -The Mendel’s four postulates and laws of inheritance are: (1) Principles of Paired Factors (2) Principle of Dominance(3) Law of Segregation or Law of Purity of Gametes (Mendel’s First Law of Inheritance) and (4) Law of Independent Assortment (Mendel’s Second Law of Inheritance).
Detailed explanation-4: -Mendel’s laws include the Law of Dominance and Uniformity, the Law of Segregation, and the Law of Independent Assortment.
Detailed explanation-5: -Mendel’s laws (principles) of segregation and independent assortment are both explained by the physical behavior of chromosomes during meiosis.