## Unit: Gene expression and regulation

### introduction to nucleic acids and nucleotides
https://cdn.kastatic.org/ka-youtube-converted/hI4v7v8AdfI.mp4/hI4v7v8AdfI.mp4
https://cdn.kastatic.org/ka-youtube-converted/hI4v7v8AdfI.mp4-low/hI4v7v8AdfI-low.mp4
https://cdn.kastatic.org/ka-youtube-converted/hI4v7v8AdfI.mp4-low-ios/hI4v7v8AdfI-low-ios.mp4

### dna deoxyribonucleic acid
https://cdn.kastatic.org/ka-youtube-converted/AmOO4j0E408.mp4/AmOO4j0E408.mp4

### molecular structure of dna
https://cdn.kastatic.org/ka-youtube-converted/L677-Fl0joY.mp4/L677-Fl0joY.mp4

### molecular structure of rna
https://cdn.kastatic.org/ka-youtube-converted/jUUJSOM1ihU.mp4/jUUJSOM1ihU.mp4

### antiparallel structure of dna strands
https://cdn.kastatic.org/ka-youtube-converted/0CQ5ls3Uc2Q.mp4/0CQ5ls3Uc2Q.mp4

### leading and lagging strands in dna replication
https://cdn.kastatic.org/ka-youtube-converted/eM7arWJJ3zk.mp4/eM7arWJJ3zk.mp4
https://cdn.kastatic.org/ka-youtube-converted/eM7arWJJ3zk.mp4-low/eM7arWJJ3zk-low.mp4

### speed and precision of dna replication
https://cdn.kastatic.org/ka-youtube-converted/PSl6IXUCNuw.mp4/PSl6IXUCNuw.mp4
https://cdn.kastatic.org/ka-youtube-converted/PSl6IXUCNuw.mp4-low/PSl6IXUCNuw-low.mp4

### semi conservative replication
https://cdn.kastatic.org/ka-youtube-converted/jaJ3NlqK5dA.mp4/jaJ3NlqK5dA.mp4

### molecular structure of rna
https://cdn.kastatic.org/ka-youtube-converted/jUUJSOM1ihU.mp4/jUUJSOM1ihU.mp4

### transcription and mrna processing
https://cdn.kastatic.org/ka-youtube-converted/JQIwwJqF5D0.mp4/JQIwwJqF5D0.mp4
https://cdn.kastatic.org/ka-youtube-converted/JQIwwJqF5D0.mp4-low/JQIwwJqF5D0-low.mp4

### post translational regulation
https://cdn.kastatic.org/ka-youtube-converted/nz5rbvt64kE.mp4/nz5rbvt64kE.mp4

### translation mrna to protein
https://cdn.kastatic.org/ka-youtube-converted/ocAAkB32Hqs.mp4/ocAAkB32Hqs.mp4
https://cdn.kastatic.org/ka-youtube-converted/ocAAkB32Hqs.mp4-low/ocAAkB32Hqs-low.mp4

### retroviruses
https://cdn.kastatic.org/ka-youtube-converted/KhdX5eX4dMM.mp4/KhdX5eX4dMM.mp4

### differences in translation between prokaryotes and eukaryotes
https://cdn.kastatic.org/ka-youtube-converted/WNZf4ip_R9s.mp4/WNZf4ip_R9s.mp4

### rna transcription and translation
https://cdn.kastatic.org/ka-youtube-converted/6gUY5NoX1Lk.mp4/6gUY5NoX1Lk.mp4

### dna and chromatin regulation
https://cdn.kastatic.org/ka-youtube-converted/OqRt723t33o.mp4/OqRt723t33o.mp4

### regulation of transcription
https://cdn.kastatic.org/ka-youtube-converted/ypH-hDKpCY0.mp4/ypH-hDKpCY0.mp4

### cellular specialization differentiation
https://cdn.kastatic.org/ka-youtube-converted/YtvL-LQlPrU.mp4/YtvL-LQlPrU.mp4

### non coding rna ncrna
https://cdn.kastatic.org/ka-youtube-converted/9YrS35wxE7o.mp4/9YrS35wxE7o.mp4

### operons and gene regulation in bacteria
https://cdn.kastatic.org/ka-youtube-converted/N7_K0yl0Egk.mp4/N7_K0yl0Egk.mp4
https://cdn.kastatic.org/ka-youtube-converted/N7_K0yl0Egk.mp4-low/N7_K0yl0Egk-low.mp4

### lac operon
https://cdn.kastatic.org/ka-youtube-converted/LuOaEe89_HE.mp4/LuOaEe89_HE.mp4
https://cdn.kastatic.org/ka-youtube-converted/LuOaEe89_HE.mp4-low/LuOaEe89_HE-low.mp4

### trp operon
https://cdn.kastatic.org/ka-youtube-converted/EvLy_1_Y3tk.mp4/EvLy_1_Y3tk.mp4
https://cdn.kastatic.org/ka-youtube-converted/EvLy_1_Y3tk.mp4-low/EvLy_1_Y3tk-low.mp4

### an introduction to genetic mutations
https://cdn.kastatic.org/ka-youtube-converted/g02RnGXCXrQ.mp4/g02RnGXCXrQ.mp4

### mutagens and carcinogens
https://cdn.kastatic.org/ka-youtube-converted/4mrp5uI9anE.mp4/4mrp5uI9anE.mp4

### the effects of mutations
https://cdn.kastatic.org/ka-youtube-converted/JxC2phkdY8Y.mp4/JxC2phkdY8Y.mp4

### impact of mutations on translation into amino acids
https://cdn.kastatic.org/ka-youtube-converted/1Dk0_-fyyDI.mp4/1Dk0_-fyyDI.mp4
https://cdn.kastatic.org/ka-youtube-converted/1Dk0_-fyyDI.mp4-low/1Dk0_-fyyDI-low.mp4
https://cdn.kastatic.org/ka-youtube-converted/1Dk0_-fyyDI.mp4-low-ios/1Dk0_-fyyDI-low-ios.mp4

### mutation as a source of variation
https://cdn.kastatic.org/ka-youtube-converted/LZCE-4q5f9c.mp4/LZCE-4q5f9c.mp4
https://cdn.kastatic.org/ka-youtube-converted/LZCE-4q5f9c.mp4-low/LZCE-4q5f9c-low.mp4
https://cdn.kastatic.org/ka-youtube-converted/LZCE-4q5f9c.mp4-low-ios/LZCE-4q5f9c-low-ios.mp4

### introduction to genetic engineering
https://cdn.kastatic.org/ka-youtube-converted/JNgONZ8Dq9I.mp4/JNgONZ8Dq9I.mp4
https://cdn.kastatic.org/ka-youtube-converted/JNgONZ8Dq9I.mp4-low/JNgONZ8Dq9I-low.mp4
https://cdn.kastatic.org/ka-youtube-converted/JNgONZ8Dq9I.mp4-low-ios/JNgONZ8Dq9I-low-ios.mp4

### dna cloning and recombinant dna
https://cdn.kastatic.org/ka-youtube-converted/5ffl-0OYVQU.mp4/5ffl-0OYVQU.mp4
https://cdn.kastatic.org/ka-youtube-converted/5ffl-0OYVQU.mp4-low/5ffl-0OYVQU-low.mp4

### the polymerase chain reaction pcr
https://cdn.kastatic.org/ka-youtube-converted/nHi-3jP6Mvc.mp4/nHi-3jP6Mvc.mp4
https://cdn.kastatic.org/ka-youtube-converted/nHi-3jP6Mvc.mp4-low/nHi-3jP6Mvc-low.mp4

### gel electrophoresis dna
https://cdn.kastatic.org/ka-youtube-converted/_EYsykjsfiY.mp4/_EYsykjsfiY.mp4
https://cdn.kastatic.org/ka-youtube-converted/_EYsykjsfiY.mp4-low/_EYsykjsfiY-low.mp4

### dna sequencing
https://cdn.kastatic.org/ka-youtube-converted/Jnk_4Maf5Fk.mp4/Jnk_4Maf5Fk.mp4

### applications of dna technologies
https://cdn.kastatic.org/ka-youtube-converted/gqMqYYcJgz4.mp4/gqMqYYcJgz4.mp4
