unit 6 study guide Flashcards
which type of cell reproduction produces cells with genetic variation?
meiosis
which type of cell reproduction produces cells that are genetically identical?
mitosis
which type of cell reproduction is used for the growth of an organism?
mitosis
what type of cells does mitosis make?
somatic
what type of cells does meiosis make?
gametes
which type of cell reproduction makes diploid cells?
mitosis
which type of cell reproduction makes haploid cells?
meiosis
what is the diploid number in humans?
46
what is the haploid number in humans?
23
diploid cells have their chromosomes in pairs– these pairs consist of 2 chromosomes that are similar in size and carry similar genetic information?
homologous pairs
how many cells are produced during mitosis?
2
how many cells are produced during meiosis?
4
how many divisions are in mitosis?
1
how many divisions are in meiosis?
2
before meiosis can begin, cells are in what phase, in which they grow and replicate their DNA?
interphase
when does crossing over occur? (meiosis or mitosis)
meiosis
which phase of meiosis is when crossing over occurs?
prophase I
what does crossing over increase for the resulting cell?
genetic variation
does crossing over occur between sister chromatids on a single chromosome, or between non sister chromatids in a homologous pair?
non sister chromatids in a homologous pair
in which phase of meiosis do the homologous pairs line up in the middle?
metaphase I
in which phase of meiosis do the homologous pairs seperate?
anaphase I
what was the main goal of meiosis I?
to seperate homologous pairs
do cells replicate their DNA again before meiosis II?
no
do homologous chromosomes pair up during prophase II?
no
