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Bio Meiosis Unit
Meiosis quiz 2017
Term | Definition |
---|---|
duplicate | replicate |
gonads | ovaries or testes |
gonads | reproductive organs |
gametes | egg or sperm |
gametes | sex cells |
meiosis | reduction division |
where meiosis occurs | in the gonads |
meiosis | cell division to produce sex cells |
diploid | 2n, normal body cell |
haploid | n, sex cell |
primary sex cell | 2n, cell that will divide by meiosis, found in the gonads |
In humans, 23 pairs = 46 chromosomes | Normal cell |
In humans, 23 chromosomes (not paired) | are found in a Sex Cell |
homologous chromosomes | one pair of of chromosomes |
tetrad | two pairs of "sister" homologous chromosomes |
synapsis | when sister chromosomes join together to form a tetrad |
crossing over | genetic material mixes when chromosomes are in tetrads |
Prophase 1 | genetic variation can occur when chromosomes form tetrads in this phase |
Metaphase 1 | genetic variation can occur when chromosomes line up randomly in this phase |
Independent assortment | Random assortment |
fertilization | egg and sperm meet |
zygote | New cell formed when egg and sperm meet |
asexual reproduction | clone cells are made by mitosis |
2 ways genetic variation occurs | crossing over and independent assortment |
cells produced by meiosis | sex cells or gametes |
cells produced by mitosis | normal body cells or clones |