2.2.3 - 2.2.5 Flashcards
what is a cytogeneticist?
someone who studies chromosomes and impact on cells
what is a karyotype?
visual rep of someone’s complete set of chromosomes, organized
what’s mitosis?
cell division
what’s meiosis?
halves chromosomes, cell division that happens in sexual reproduction creating gametes (sperm or egg)
mitosis vs meiosis
both are cell division, mitosis results in two identical cells while meiosis results in four genetically distinct cells. mitosis for growth meiosis for sex stuff
what is a gamete?
reproductive cell, sex cell (sperm/egg)
what does crossing over mean?
where two chromosomes that carry the same genes (homologous) exhange genes during meiosis, results in unique chromatids
what is nondisjunction?
when a pair of homologous chromosomes has failed to separate at anaphase so both chromosomes pass to same daughter cell