Pleiotropism in Genetics: A Comprehensive Overview
Dive into the concept of pleiotropism in genetics through this informative guide. Explore how one gene can influence multiple unrelated traits, leading to conditions like sickle cell anemia and phenylketonuria (PKU). Learn about the history of pleiotropism, the rare genetic condition PKU, its symptoms, and more.
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Presentation Transcript
SNS ACADEMY A fingerprint International School Affiliated to CBSE New Delhi Affiliation No :1930610 GRADE XII A (2020-21) COURSE NAME : BIOLOGY (044) CHAPTER-5 PRINCIPLES OF INHERITANCE 1
OBJECTIVE Learn about genetic defect called Pleotropism. Acquire knowledge on Pleotropic gene. Identify various Pleotroic diseases 2
WHAT IS PLEOTROPISM? One gene influences multiple unrelated phenotypic traits. Example: sickle cell anemia, phenyl keto uria (PKU) 3
HISTORY The term pleiotropie was coined in a 1910 by Festschrift Greek term Pleion more character Trops 4
Phenylketouria (PKU) Rare genetic condition Inborn error of metabolism Amino acid phenyl analine 5
Symptoms of phenylketonuria Seizures Tremors, or trembling and shaking Stunted growth Hyperactivity Skin conditions such as eczema A musty odor of their breath, skin, or urine 6
