| A | B |
|---|
| genetic diversity | advantage of sexual reproduction |
| prophase I | crossing over occurs in this phase of meiosis |
| egg cells | cytoplasm divides unequally during the production of these |
| polar bodies | small cell with very little cytoplasm formed during oogenesis |
| fragmentation | asexual reproduction where the body breaks into several pieces |
| four haploid cells | in telophase 2, cytokinesis results in this |
| meiosis | process of gamete production |
| Anaphase II | homologous chromosomes move to opposite poles during what phase of meiosis |
| nondisjunction | failure of chromosomes to separate properly |
| Cri du chat | chromosomal disorder due to a broken arm on #5 |
| karyotype | photograph of chromosomes arranged by size and genetic pattern |
| spermatogenesis | type of gametogenesis that produces sperm |
| deletion | chromosomal mutation where part of the chromosome is lost |
| autosomes | chromosomes not involved with sex determination |
| forty six | number of chromosomes in somatic cells |
| duplication | chromosomal disorder where part of the chromosome is repeated |
| cytokinesis | division of cytoplasm |
| chromatid | identical half of a chromosome |
| down syndrome | genetic disorder due to three 21 chromosomes |
| gene | segment of DNA on a chromosome |
| deletion | piece of the chromosome breaks off |
| duplication | chromosome grament is repeated |
| inversion | chromosome piece becomes oriented in the reverse of its usual direction |
| translocation | part of a chromosome breaks off and attaches to another non-homologous chromosome |
