BIOL 121 Study Guide - Fall 2018, Comprehensive Midterm Notes - Chromosome, Natural Selection, Evolution
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BIOL 121 Full Course Notes
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Unreplicated chromosome- single, long dna wrapped around histones --------------- Replicated chromosome- 2 copies of the same chromosome ==================== Chromosome- single, long dna double helix wrapped in a condensed manner around histones. Gene- a dna segment coding for a particular protein or rna in cell. Chromatid- each dna copy in a replicated chromosome. Sex chromosome- x-chromosome associated w/ sex of individual. Homologous chromosomes- carry same genes, but may have different alleles (similar in. Karyotype- number and types of chromosomes present size, shape) One on each chromosome in the homologous pair. Haploid number (n)- # of chromosomes in a gamete. Active time cell either growing and preparing to divide, or doing its specialized function in a multicellular individual. Chromatin: less condensed form of chromosomes: why? b/c dna must be available to rna. Genetic material replication for daughter cells to have identical copies. After replicating, each chromosome consists of 2 identical chromatids bound @ centromere.
