Heredity and Variation



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Contents

Chromosomes, DNA, & RNA


Description: Chromosomes carry genetic material; DNA holds instructions, RNA helps in protein synthesis and gene expression.


Mendel’s Principles of Heredity


Description: Mendel’s heredity laws explain trait inheritance through dominant and recessive alleles passed from parents.


Genetic Disorders & Down Syndrome


Description: Genetic disorders result from DNA mutations; Down Syndrome is caused by an extra chromosome 21.


Diagnosis of Sickle Cell Anemia


Description: Sickle cell anemia is diagnosed using blood tests that detect abnormal hemoglobin and genetic mutations.


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