click below
click below
Normal Size Small Size show me how
Meiosis HBio
Question | Answer |
---|---|
Part of Interphase when the DNA is copied. | S-phase |
DNA in its condensed form. | Chromosomes |
A chromosome and its copy (makes an "X" shape). | Sister Chromatids |
Cells with two sets of chromosomes (2n). One set from mom, one set from dad. | Diploid |
Cells with half the number of normal chromosomes or one set of chromosomes (n). | Haploid |
What kind of cells go through mitosis? | Somatic cells (body cells) |
What kind of cells go through meiosis? | Gametes (sex cells) |
Name of the male gamete that's produced in the testes. | sperm |
Name of the female gamete that's produced in the ovaries. | ovum (egg) |
During fertilization, the sperm and the egg fuse together to form a _______________. | Zygote |
The process that produces gametes. It creates 4 haploid cells that are NOT identical. | Meiosis |
Meiosis in males is called | Spermatogenesis |
Meiosis in females is called | Oogenesis |
Number of sperm produced in spermatogenesis. | 4 |
Number of cells produced in oogenesis. | 4 (3 polar bodies that die, 1 egg that lives). |
Pair of chromosomes that are similar in shape and size (XX - two side-by-side). | Homologous chromosomes |
Phase of meiosis when synapsis and crossing over occurs. | Prophase I |
The process of synapsis forms _______________, where homologous chromosomes come together. | tetrads |
Phase of meiosis where the homologous chromosomes align down the equator (middle). Also where Independent Assortment occurs. | Metaphase I |
Part of Prophase I where chromosomes exchange DNA to create diversity in the offspring. | Crossing over |
Part of Metaphase I where homologous chromosomes line up at random to create diversity in the offspring. | Independent Assortment |
Phase of meiosis where homologous chromosomes are separated. | Anaphase I |
Phase of meiosis where one cells begins to divide into two cells. | Telophase I |
Phase of meiosis where the nuclear envelope disappears and chromosomes condense (occuring in 2 cells). | Prophase II |
Phase of meiosis where sister chromatids align down the equator (middle), NOT in pairs. | Metaphase II |
Phase of meiosis where sister chromatids are separated apart. | Anaphase II |
Phase of meiosis where two cells each begin to divide into 2 daughter cells for a total of 4 cells. | Telophase II |
Diploid (2n) number in humans. | 46 chromosomes (2 sets of 23, one set from mom, one set from dad). |
Haploid (n) number in humans. | 23 chromosomes (each parent will pass on 23 chromosomes to the offspring). |