Генетика. Часть 3. Закономерности наследования признаков. Взаимодействие неаллельных генов. Крюков В.И. - 73 стр.

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. .  3. . 
. . –: , 2006. –176 .
73
   F
2

   ,    
  3:1.  , ,
    
. 
-
     -
.
     
     F
2
  -
 (3+1)
n
,  – -
.
  ,    
      , 
:
–  (3+1)
1
=3:1, . 2 ,
–  (3+1)
2
= 9:3:3:1, . 4 .
–  (3+1)
3
= 27:9:9:9:3:3:3:1, . 8 
. .
,     
F
2
 2
n
,  2 
  (),     -
 ,  –  
, -
. 
    2
1
= 2,  2
2
= 4, -
 2
3
= 8,  2
4
= 16 . .
    , -
     (F
1
),   -
,  F
2
:
–  Aa – ,  2
1
;
–  AaBb – , 2
2
,
–  AaBbDd – ,  2
3
.
, , -
 F
1
,  2
n
,  – 
, .
     F
1
 
 .     4  -
 1:2: 1, . 4
1
. -
 4
2
= 16,  – 4
3
= 64 . . -
,  4
n
, 
 4    -
, – . 
                                                               73


                                                                         F2
                                                                              ,
                                                  3:1.                                               ,                                 ,

                                                                    .
                                                                                                                                       -
                                                                                                                                       -
                                                                .

                                                                          F2                                                           -
                                                                    (3+1)n,             –                                              -
                                     .
                                             ,
                                                                                                                     ,
                         :
–                                                           (3+1)1 =3:1,      .2                          ,
–                                                        (3+1)2 = 9:3:3:1,    .4                         .
–                                                         (3+1)3 = 27:9:9:9:3:3:3:1,                     .8
    . .
                                         ,
    F2                                                                  2n,                              2
                                 (                    ),                                                                               -
                             ,                       –
                     ,                                                                                                                 -
                     .
                                                              21 = 2,                                             22 = 4,              -
                         3
                 2 = 8,                                        24 = 16            . .
                                                                                                                         ,             -
                                                                                                (F1),                                  -
                             ,                                                      F2:
         –                                  Aa –                                                 ,               21;
         –                               AaBb –                                                              ,               22,
                                                                                                         3
         –                                 AaBbDd –                                     ,            2                   .
                                         ,                                                  ,                                          -
         F1,                                                                            2n,                      –
                                 ,                                                                                             .
                                                                                                F1
                 .                                                                      4                                              -
             1       :2       :1 ,               . 41.                                                                                 -
                             42 = 16,                                         – 43 = 64              . .                               -
     ,                                                                                                                         4n,
                 4                                                                                                                     -
                                                                              ,     –                                              .
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
          .         .    3.                                       .
                  .                       .–     :             , 2006. –176 .

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