BIO 182 Exam 1 Questions with 100% Correct Answers | Verified | Updated 2024

BIO 182 Exam 1 Questions with 100% Correct Answers | Verified | Updated 2024 Mitosis - answerStart with 1 cell (46 chromosomes) and end with 2 cells (46 chromosomes each) Sexual reproduction (gametes) - answerStart with 1 cell (46 chromosomes) and end with 4 cells (23 chromosomes) Mitosis - answerStart with 1 diploid cell, end with 2 diploid cells, one cell division, and mostly somatic cells Meiosis - answerStart with 1 diploid cell, end with 4 haploid cells, two cell divisions, and specialized germline cells Ploidy - answerNumber of sets of chromosomes Diploid - answerTwo complete sets of chromosomes, 2n Haploid - answerOne complete set of chromosomes, 1n Meiosis I: Prophase I - answerNuclear envelope breaks down, homologous chromosomes pair off, protein binding homologous chromosomes, synapsis forms between chromosomes (facilitates crossover and recombination) Crossover (Prophase I) - answerGene exchange between non-sister chromatids Chiasma - answerPoint of contact where crossover occurs Recombination (Prophase I) - answerReshuffled chromatids Homologous chromosomes - answerThe same chromosome from different origins with genetic variability Sister chromatids - answerIdentical copies of a chromosome Non-sister chromatids - answerNon-identical copies of homologous chromosomes Meiosis I: Prometaphase I - answerNuclear envelope breaks down further, spindle fibers connect to kinetochore Meiosis I: Metaphase I - answerHomologous chromosome pairs arranged along the center axis of cell, limited random arrangement of chromosomes