University:
California State University, Northridge
Course:
BIOL 322 | Evolutionary Biology
Academic year:

2024
Views:

62

Pages:

2
Author:

Dawson Thornton

meiosis test(first worksheet- cell division: meiosis) meosis what type of cell division results in cells with half the number of chromosomes as the original cell? 18 if a sexually reproducing organism has a chromosome number of 2N=18, how many chromosomes will be found in each of the body cells of this organism 9 if a sexually reproducing organism has a chromosome number of 2N=18, how many chromosomes sexual in this type of reproduction, the parent passes down only half of its DNA to the offspring fertilization the chromosomes that combine during sexual reproduction are contained in special sexual reproductive cells called gametes which join together during this haploid refers to a cell having one of each kind of chromosome prophase 1 During which stage of meiosis are tetrads formed? gamete that term is used to describe the sex cells(egg and sperm cells)? metaphase 1 during which stage of meiosis do tetrads line up at the center of the cell? metaphase 2 during which stage of meiosis do sister chromatids line up at the center of the cell tetrads what is pulled apart during anaphase 1 homologous chromosomes what is pulled apart during anaphase 2 diploid refers to a cell having two of each kind of chromosome 2N what id the symbol for diploid N what is the symbol for haploid crossing over the exchange of genes between segments of homologous chromosomes during meiosis is called what zygote the fusion of sperm and egg results in what tetrad body cells in what type of cells does this type of cell division occur?(mitosis) sex cells in what type of cells does this type of cell division occur?(meiosis) 2 how many cells are formed at the end of this cell division?(mitosis) 4 how many cells are formed at the end of this cell division?(meiosis) same are the resulting daughter cells the same or different than the mother cell?(mitosis) different are the resulting daughter cells the same or different than the mother cell?(meiosis) no are tetrads formed?(mitosis) yes are tetrads formed?(meiosis) no does crossing over occur?(mitosis) yes does crossing over occur?(meiosis) 1/2 46 how many chromosomes are in each daughter cell?(mitosis) 23 how many chromosomes are in each daughter cell?(meiosis) Synapsis-when the tetrad forms. Crossing over-the exchange of genes between homologous chro- describe synapsis and crossing over. During which stage of meiomosomes. sis does this occur? What is the importance of this event? occurs in prophase and increases variety in the population tetrads divide unevenly into one in three instead of two in two, gametes with extra chromosomes become the child with down syndrome describe how an individual is born with down syndrome 2/2