JO IB BIO II: unit 4C meiosis
UNDERSTANDINGS / APPLICATIONS / SKILLS / NATURE OF SCIENCE
3.3.U2: The halving of the chromosomes number allows a sexual life cycle with fusion of gametes.
3.3.U6: Separation of pairs of homologous chromosomes in the first division of meiosis halves the chromosome number.
3.3.NOS: Making careful observations- meiosis was discovered by microscope examination of dividing germ-line cells.
3.3.U3: DNA is replicated before meiosis so that all chromosomes consist of two sister chromatids.
10.1.U1: Chromosomes replicate in interphase before meiosis
3.3.U4: The early stages of meiosis involves pairing of homologous chromosomes and crossing over followed by condensation.
10.1.U2: Crossing over is the exchange of DNA material between non-sister homologous chromatids
10.1.U3: Chiasmata formation between non-sister chromatids can results in an exchange of alleles
10.1.S1: Drawing diagrams to show chiasmata formed by crossing over
10.1.U4: Crossing over produces new combinations of alleles on the chromosomes of the haploid cells
3.3.U5: Orientation of pairs of homologous chromosomes prior to separation is random
10.1.U6: Independent assortment of genes is due to the random orientation of pairs of homologous chromosomes in meiosis 1
3.4.U3: The alleles of each gene separate into different haploid daughter nuclei during meiosis
10.2.U1: Unlinked genes segregate independently as a result of meiosis.
3.3.A1: Non-disjunction can cause Down syndrome and other chromosome abnormalities. Studies showing age of parents influences chances of non-disjunction.
3.3.U8: Fusion of gametes from different parents promotes genetic variation.
3.3.U7: Crossing over and random orientation promotes genetic variation.
3.3.S1: Drawing diagrams to show the stages of meiosis resulting in the formation of four haploid cells.
10.1.U5: Homologous chromosomes separate in meiosis I
10.1.U7: Sister chromatids separate in meiosis II
3.3.U1: One of diploid nucleus divides by meiosis to produce four haploid nuclei.
3.3.U2: The halving of the chromosomes number allows a sexual life cycle with fusion of gametes.
3.3.U6: Separation of pairs of homologous chromosomes in the first division of meiosis halves the chromosome number.
3.3.NOS: Making careful observations- meiosis was discovered by microscope examination of dividing germ-line cells.
3.3.U3: DNA is replicated before meiosis so that all chromosomes consist of two sister chromatids.
10.1.U1: Chromosomes replicate in interphase before meiosis
3.3.U4: The early stages of meiosis involves pairing of homologous chromosomes and crossing over followed by condensation.
10.1.U2: Crossing over is the exchange of DNA material between non-sister homologous chromatids
10.1.U3: Chiasmata formation between non-sister chromatids can results in an exchange of alleles
10.1.S1: Drawing diagrams to show chiasmata formed by crossing over
10.1.U4: Crossing over produces new combinations of alleles on the chromosomes of the haploid cells
3.3.U5: Orientation of pairs of homologous chromosomes prior to separation is random
10.1.U6: Independent assortment of genes is due to the random orientation of pairs of homologous chromosomes in meiosis 1
3.4.U3: The alleles of each gene separate into different haploid daughter nuclei during meiosis
10.2.U1: Unlinked genes segregate independently as a result of meiosis.
3.3.A1: Non-disjunction can cause Down syndrome and other chromosome abnormalities. Studies showing age of parents influences chances of non-disjunction.
3.3.U8: Fusion of gametes from different parents promotes genetic variation.
3.3.U7: Crossing over and random orientation promotes genetic variation.
3.3.S1: Drawing diagrams to show the stages of meiosis resulting in the formation of four haploid cells.
10.1.U5: Homologous chromosomes separate in meiosis I
10.1.U7: Sister chromatids separate in meiosis II
3.3.U1: One of diploid nucleus divides by meiosis to produce four haploid nuclei.