Inglise keel unit 5 answers
ref to maintaining chromosome number when gametes fuse / gametes
must be haploid ; 2 max
[5]
88. marking points 1,6 and 9 must be linked to correct statements as to what is
taking place in these stages to gain the mark.
1 prophase 1 ;
2 synapsis / homologous chromosomes pair up / bivalents form ;
3 crossing over ;
4 chiasma(ta) occur ;
5 DNA / alleles, exchanged ; A linked genes separated ;
6 metaphase 1 ;
7 independent / random, assortment ;
8 bivalents line up on equator, independent of each other / randomly ;
9 metaphase 2 ;
10 independent assortment of chromatids ;
11 chromosome mutation ;
12 named example ; e.g. non-disjunction
13 AVP ; e.g
annaabi.ee 
