Genetics and Evolution

Deviations from Mendelism-Incomplete dominance

Introduction Mendel’s basic model of inheritance explains the characteristics of inheritance and how they are inherited in all organisms, including human beings. Key points  Alleles are the different versions of genes. Usually, an organism has two different alleles – one recessive allele, which is suppressed, and the other is the dominant allele. Law of independent […]

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Biology, Class 12, Genetics and Evolution, NEET, Principles of inheritance: Mendel’s laws

Deviations from Mendelism

Introduction With his work on the garden pea (or Pisum sativum) in the church garden, Gregor Johann Mendel, a monk, a curious, naturalist, innovative guy, achieved a paradigm shift. He was enthralled by the inheritance pattern and spent his entire life studying it. Due to his pioneering achievements in the study of genetics, he is known as

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Biology, Class 12, Genetics and Evolution, NEET, Principles of inheritance: Mendel’s laws

Definition of gene flow and genetic drift

Genetic variety is most likely ensured by genetic flow since alleles change when organisms migrate to another community. Genetic drift, on the other hand, is less likely to assure allele variation since it is more dependent on chance. GENE FLOW: Gene flow, also known as gene migration, is the transfer of genetic material from one

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Biology, Class 12, Genetics and Evolution, NEET, Principles of inheritance: Mendel’s laws