Study Guide & Educational Overview
### Foundational Cellular & Genetic Concepts:
* **DNA Architecture & Replication**: Double-stranded helix discovered by Watson, Crick, and Franklin; Adenine pairs with Thymine (A-T) and Cytosine with Guanine (C-G); semi-conservative replication powered by DNA polymerase.
* **The Central Dogma**: DNA is transcribed into messenger RNA (mRNA, where Uracil replaces Thymine), which is translated by ribosomes into polypeptide amino acid chains.
* **Organelle Specialization**: Mitochondria (cellular respiration, ATP synthesis), Chloroplasts (photosynthesis, Calvin cycle via Rubisco), Lysosomes (acidic waste breakdown), Endoplasmic Reticulum (rough with ribosomes, smooth for lipids).
* **Genetics & Heredity**: Gregor Mendel's laws of segregation and independent assortment; heterozygous (Bb) cross yields a 3:1 phenotypic dominant-to-recessive ratio; humans have 23 pairs (46 total) chromosomes.
* **DNA Architecture & Replication**: Double-stranded helix discovered by Watson, Crick, and Franklin; Adenine pairs with Thymine (A-T) and Cytosine with Guanine (C-G); semi-conservative replication powered by DNA polymerase.
* **The Central Dogma**: DNA is transcribed into messenger RNA (mRNA, where Uracil replaces Thymine), which is translated by ribosomes into polypeptide amino acid chains.
* **Organelle Specialization**: Mitochondria (cellular respiration, ATP synthesis), Chloroplasts (photosynthesis, Calvin cycle via Rubisco), Lysosomes (acidic waste breakdown), Endoplasmic Reticulum (rough with ribosomes, smooth for lipids).
* **Genetics & Heredity**: Gregor Mendel's laws of segregation and independent assortment; heterozygous (Bb) cross yields a 3:1 phenotypic dominant-to-recessive ratio; humans have 23 pairs (46 total) chromosomes.
Frequently Asked Questions
A bacterial immune mechanism adapted into a revolutionary gene-editing technology that uses RNA guides to cut and alter specific DNA sequences in living cells.
Heterozygous carriers (HbAS) possess evolutionary resistance against severe malaria, providing a classic example of heterozygote advantage in equatorial regions.
