Meiosis lab Flashcards
meiosis
process that produces cells that contain 1 chromosome from each pair of chromosomes that started the process
gametes
eggs and sperm of sexually reproducing animals
cells resulting from meiosis naturally have ___ as many chromosomes as were in the original cell
half
cells resulting from ___ naturally have half as many chromosomes as were in the original cell
meiosis
cells resulting from meiosis naturally have half as many ___ as were in the original cell
chromosomes
meiosis (diploid and haploid)
half of the diploid number of chromosomes of somatic cells is distributed to games to provide them with the haploid number of chromosomes
diploid
cell has 2 chromosomes of each type
haploid
cell has 1 chromosome of each type
___ is the process by which an extraordinary diversity of gene combinations is provided in spores and gametes
meiosis
meiosis is the process by which an extraordinary diversity of gene combinations is provided in ___
spores and gametes
how does meiosis accomplish diversity of gene combinations?
independent assortment
crossing-over
resulting recombinant chromosomes contain a mix of maternal and paternal genes
independent assortment (definition)
chromosomes derived from each parent have no way of remaining grouped separately from the other parent
spores and gametes contain a mixture of maternally and paternally derived chromosomes
crossing-over (definition)
chromosomes themselves become heterogeneous
AKA recombination
portions of chromosomes derived from 1 parent become recombined w/ portions of chromosomes derived from the other
gene
controls expression of trait
allele
2 alleles for each gene
allele is the gene on the chromosome
