Biology chapter 10 Meiosis study guide

Anaphase 2During what phase of meiosis are sister chromatids separated and pulled to opposite sides of the cell?
homologous chromosomes travel to opposite sides of the cell to be contained in new nucleiIn meiosis, what leads to a reduction in chromosome number from 2n to n?
crossing overWhat is illustrated in this diagram?
when homologous chromosomes line up in pairsDuring which event in the cell cycle does crossing over most likely occur?
30The typical body cell of a “Satocojo” cell has 60 chromosomes. How many chromosomes are in a typical Satocojo sperm?
homologous pairs of chromosomes line up next to one another along the equatorWhat occurs during metaphase 1?
metaphase 2Which stage of meiosis is this?
metaphase 1During which stage of meiosis is the law of independent assortment?
2 chromosomes (notice the first cell is DIPLOID 2N and the gamete is HAPLOID N)If a cell has 2 chromosomes (N=2), how many chromosomes does the gamete have?
Meiosis reduces number of chromosomes to N in the sex cell (sperm or egg). After fertilization, the chromosome number is brought back to 2N (N from mom + N from dad = 2N)What happens in meiosis that our children have the same number of chromosomes as the parents?
1) crossing over
2) independent assortment
3) fertilization
What are the 3 events in meiosis that result in genetic variation?
1) Both result in daughter cells
2) Both duplicate DNA and divide
3) Cell reproduction
How are mitosis and meiosis similar?
1) Mitosis results in 2 exact copies; meiosis results in 4 genetically different cells
2)Meiosis 2 PMAT cycles; mitosis 1 PMAT cycle
3)Meiosis chromosomes cross over; mitosis has no crossing over
4)In Meiosis: centromeres survive anaphase 1; in Mitosis centromeres dissolve in anaphase
5) In Meiosis: cells are produced for sexual reproduction; In Mitosis cells are produced for asexual reproduction and growth and repair
How are mitosis and meiosis different?
1) Both divide
2) Both go through PMAT
How is meiosis 1 like meiosis 2?
1) No interphase before Meiosis 2
2) Meiosis 1 has homologous chromosomes
3) Meiosis 1 divides into 2 diploid cells and Meiosis 2 divides into 4 haploid cells
How is meiosis 1 different from meiosis 2?
There are 64 chromosomes from the horse and 62 chromosomes from donkey. Only 62 chromosomes will pair up and they are not identical. There is enough similar genetic information to produce a living organism but not enough similarity to produce an organism that can also reproduce.A horse has 64 chromosomes and a donkey has 62 chromosomes. A cross between a horse and a donkey will produce a mule that is sterile. Explain how this can occur.