| A | B |
|---|
| This process ensures that moms and dads genes are mixed in the homologous pair | crossing over |
| Chromosomes are replicated during this phase | interphase |
| A cleavage furrow COULD begin to form during this phase | anaphase I |
| Joined pairs of sister chromatids line up in the enter in this phase | Metaphase II |
| Meiosis occurs in | plants and animals that reproduce sexually |
| Sexual reproduction is a process by which | the nuclei of two separate cells fuse into one |
| When gametes are formed the diploid number changes to | haploid |
| During fertilization the chromosome number changes from haploid to | diploid |
| If a body cell of a rat has 14 chromosomes then there will be | 7 chromosomes found in the gametes |
| Three copies of a chromosome are called a | trisomy |
| If the 23rd pair of chromosomes has two identical sized chromosomes it must be a | female |
| When chromosomes fail to separate properly and a wrong number of chromosomes occur in a gamete this is called | non-disjunction |
| Four chromatids are called a | tetrad |
| Crossing over occurs in | prophase I |
| Chromosomes line up single file along the equator of the cell in both | mitosis and meiosis II |
| A parent cell with 10 duplicated chromosomes will produce daughtyer cells with 10 chromosomes consisting of one chromatid each | mitosis |
| This syndrome is caused by XXY | Klinefelter's Syndrome |
| This is caused by an extra chromosome 13. The majority of pregnancies end in miscarriage | Patau Syndrome |
| A genetic disorder in which the person ismentally disabled and has key characteristics like almond shaped eyes, protruding tongue and one single crease on the palm of the hand | Down Syndrome |
| This syndrome causes a tiny jaw, overlapping fingers, cleft lip and gastrointestinal defects. Most children born with this do not live very long lives | Edward's Syndrome |
