Domain IIIGenetics

DNA •Nucleic Acids and Nucleotides

•Adenine/Thymine •Guanine/Cytosine •Double Helix •Location: Nucleus

Nucleotide Structure

RNA•Ribose•Single Strand•Adenine/Uracil•Guanine/Cytosine•mRNA, tRNA, & rRNA

RNA Transcription

Translation: Protein Synthesis

Gregor Mendel and Genetics

Mendel’s Laws•Law of Dominance •Law of Segregation•Law of Independent Assortment

Meiosis•Diploid/Haploid•Gametes: Egg/Sperm•Genetic Recombination–Crossing-over/Ind. Seg.

•Zygote•Mutations: Frame Shift/Point

Independent Assortment and Segregation

Mitosis•Process in which threadlike nuclear material is divided equally between two daughter cells.

•Mitosis keeps the number of chromosomes constant from one cell generation to the next.

•Growth and tissue repair •Asexual reproduction in many organisms: binary fission, budding, and fragmentation.

Cytokinesis

Genetic Engineering•Researchers use recombinant DNA technology to analyze genetic changes.

•The cells copy the foreign DNA right along with their own DNA.