Genetics Terms Flashcard
Genetics Genetics is the study of inheritance and variation. Term genetics was first used by W. Bateson 1905. Gregor Johann Mendel is called the father of genetics. Heredity or inheritance Heredity or inheritance is the process by which characters are passed on from parent toprogeny Variation Variation is the characteristic difference by which progeny differs from their parents. Cause of variation is sexual reproduction. Phenotype External appearance or trait of an individual. Genotype Genetic constitution of an organism Genes or mendelian factor Units of inheritance. They contain the information required to express a particular trait Alleles or allelomorphs The two Mendelian factors or gene which occur on the same locus…
Quiz on Principles of Inheritance and Variation
MENDELS LAWS OF INHERITANCE
The first scientific study leading to formulation of laws of inheritance was carried out by Gregor Johann Mendel. Mendel conducted cross-hybridization experiments on garden Pea plant (Pisum sativum) and studied the transmission of characters. Mendel selected garden pea as experimental material because It is easy to cultivate. Pea plant had several true-breeding lines. The plant had a short (seasonal) life cycle so that transmission of traits from one generation to next could be studied in short period of time. Flowers are naturally self-pollinated and cross-breed manually. Characters chosen by Mendel had distinctive contrasting traits like tall and dwarf or green and yellow seeds. Mendel took one or two characters at…
Mendelian inheritance Quiz
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