B¶ng 3: B¶n chÊt vµ ý nghÜa cña c¸c qu¸ tr×nh nguyªn ph©n - gi¶m ph©n - thô tinh
C¸c qu¸ tr×nh |
ý nghÜa |
Nguyªn ph©n |
Duy tr× æn ®Þnh bé NST trong sù lín lªn cña c¬ thÓ vµ ë nh÷ng loµi sinh s¶n v« tÝnh. |
Gi¶m ph©n |
Gãp phÇn duy tr× æn ®Þnh bé NST qua c¸c thÕ hÖ ë nh÷ng loµi sinh s¶n h÷u tÝnh vµ t¹o ra nguån biÕn dÞ tæ hîp. |
Thô tinh |
Gãp phÇn duy tr× æn ®Þnh bé NST qua c¸c thÕ hÖ ë nh÷ng loµi sinh s¶n h÷u tÝnh vµ t¹o ra nguån biÕn dÞ tæ hîp. |
.Rewrite the following sentences in reported speech,beginning as shown. 1,He is too young to go to school .
->He is not .........................................
2,Her hair is long,straight and black
->She has ...............................
3,We have quite different character
->Our characters...............................
4,The water is so dirty that he can't bathe his eyes
->The water is not...............................