Section 3-4: Sexual Reproduction & Meiosis Flashcards
homologous chromosomes
not identical
sister chromatids
identical
meiosis I prophase differences
homologous chromosomes pair with eachother
crossing-over (recombination)
meiosis I anaphase differences
homologous chromosomes move to opposite poles
random assortment of chromosomes
meiois II anaphase differences
chromatids are separated into 2 daughter chromosomes
genetic variations
random assortment of DNA segments
random combination of gametes (fertilization)
prophase 1 genetic variation
recombination between homologous chromosomes
metaphase/anaphase I genetic variation
random assortment of individual chromosomes
are the majority of cells in your body diploid or haploid?
diploid
what process converts diploid cells to haploid?
meiosis
what process converts haploid cells to diploid?
fertilization
which stages of meiosis are replicated chromosomes present?
after s phase of interphase until anaphase II
which stages of meiosis are paired homologous chromosomes presento?
beginning until anaphase I
which stages of meiosis are DNA segments shuffled between homologous chromosomes?
prophase I
3 ways of generating genetic variation during sexual reproduction
fertilization, recombination, random assortment