ANTH 101 Lecture Notes - Lecture 2: Nuclear Membrane, Allosome, Dna Replication
Document Summary
Anth 101 : lecture 2 : genetics and population. Every cell of the body is made of: Base pairs (rungs): nitrogen based molecules: guanine and cytosine, adenine and thymine. Dna unzips and 2 new strands are formed. Dna wrapped over itself over and over. 1 chromosome is from mom, and 1 from dad. Homologous chromosomes are similar in size, shape, genetic content. Autosomes are chromosomes that are not directly involved in determining sex of offspring. Sex chromosomes are pair number 23 as it determines the gender of the chromosome. Female egg cells have only x chromosomes. Male sperm cells have either x or y chromosomes. 50% chance for a boy or girl. Locus is the specific location of a gene or a dna sequence on a chromosome. Allele is different form of a gene that occur at the same loci. Eukaryotic has a nucleus contained in a nuclear membrane. Prokaryotic has free flowing nucleoid with no nuclear envelope.
