Pdf | Principi Genetike Djelic

Genetika se smatra centralnom biološkom naukom jer upravlja svim životnim procesima. Razumevanje principa genetike koje nudi Đelićeva knjiga ključno je za:

| Concept | What to Remember | Quick Mnemonic / Visual | |---------|------------------|--------------------------| | | Monohybrid cross → 3:1 (dominant : recessive) Di‑hybrid cross → 9:3:3:1 | “3‑to‑1” for single‑gene, “9‑3‑3‑1” for two‑gene. | | Punnett Square | 2×2 for monohybrid, 4×4 for dihybrid. Fill squares with gamete combinations, then count phenotypes. | Draw a grid ; treat each axis as “father’s” vs. “mother’s” gametes. | | Law of Segregation | Each parent contributes one allele per gene to the offspring. | Think “pair → split” (like a pair of shoes separating into single shoes). | | Law of Independent Assortment | Genes on different chromosomes (or far apart) assort independently. | “Shuffle deck” – each gene is a different card. | | DNA → RNA → Protein | Central Dogma : Replication → Transcription → Translation. | “Copy → Read → Build” (copy DNA → read as mRNA → build protein). | | Codon Table | 64 codons → 20 amino acids + STOP signals. Remember that UUU = Phe , AUG = Met (Start) . | Use a color‑coded chart ; group by first base for quicker lookup. | | Hardy‑Weinberg Equation | p² + 2pq + q² = 1 (genotype frequencies) p + q = 1 (allele frequencies) | “p‑square + 2pq + q‑square = 1” – think of a pie split into three slices. | | Mutation Types | Point (substitution), frameshift (insertion/deletion), repeat expansion , chromosomal (translocation, inversion). | “SIFT” – Substitution, Insertion/Deletion, Frameshift, Translocation. | | Epigenetics | DNA methylation & histone modification → reversible gene silencing. | “Methyl = mute” – methyl groups mute gene expression. | | CRISPR | Cas9 + guide RNA → precise DNA cut → edit or disable gene. | “Cut‑paste” in a genetic editor. | principi genetike djelic pdf