Homologus Pair: One chromosome from each opposite sex parent.
Chromosome: Structure within the nucleus that contains genetic information.
Chromatid: Two identical “sister” parts of a duplicated chromosome.
Centromere: Where the chromatids of a chromosome are attached.
Centriole: Two tiny structures in animal cells located near nuclear envelope.
Spindle: Fanlike microtubule structure that helps separate chromosomes during mitosis.
Tetrad: A structure containing 4 chromatids that forms during meiosis.
Crossing Over: Process where homologus chromosomes exchange portions of their chromatids during meiosis.
Diploid: A cell that contains both sets of homologus chromosomes.
Haploid: A cell that contains only a single set of chromosomes (half).
Gamete: a specialized cell involved in sexual reproduction (Ex: egg, sperm)
**Spermatogenesis: The formation of sperm (Meiosis)
**Oogenesis: The formation of eggs (Meiosis)
**Polar Body: Three of the four cells produced in oogenesis that will not participate in reproduction due to uneven cell division during meiosis.
Sexual Reproduction: Cells from two different parents unite to produce the firs cell of a new organism.
** Not found in the glossary of PH Dragonfly Cover Textbook