WHO CAME FIRST A CHICKEN OR AN EGG ???

                Topic :- variation and mutation

WHO CAME FIRST A CHICKEN OR AN EGG ??? 

EGG LAYING ANIMALS LIKE :- crocodile snake and frog etc.

Are there for many times. SO WE CONCLUDE THAT ANIMALS CAME FIRST…

BUT HERE WE ARE TALKING ABOUT EITHER CHICKEN CAME FIRST FROM EGG OR EGG CAME FIRST FROM CHICKEN ?????

•     SO WHO CAME FIRST ????

•     THE CONCLUSION OR THE SOLUTION IS THAT

•     OV-17 PROTEIN  WHICH IS IMPORTANT FOR MAKING AN EGG SHELL WHICH IS ONLY FORMED  IN THE OVARIES OF THE CHICKEN .

WE KNOW THAT THE MALE CHICKEN WILL REPRODUCE BY GIVING THEIR GENETIC MATERIAL TO THE FEMALE CHICKEN.

AND THE PROGENY  THAT COMES HAVE VERY LOW CHANCES  OF ABOUT BEING LIKE THEIR PARENTS …

THIS DNA IN PROGENY PRODUCE VARIATION AND MUTATIONS SO DNA CHANGES VERY MUCH AFTER THE GENERATION ….

FOR EXAMPLE :-

CAT AND LION

CAT IS SMALL AND LIKE OUR FRIEND. BUT LIONS LIVES IN JUNGLE AND ARE NOT FRIENDLY ..

The DNA mutation depends upon how species are living and the climate in which they living etc.

•     THIS DNA MUTATION STARTS IN THE FIRST CELL CALLED ZYGOTE..

•     SO WE CAN SAY THAT THIS EGG WAS
 PRE-EGG
OF CHICKENS.

AND IN THIS PRE EGG MUTATION AND VARIATION COMES WHICH LATER FORMS A CHICKEN....

SO WE CAN SAY THAT EGG CAME FIRST BECAUSE FIRST PRE-EGG DEVELOP INTO CHICKEN..

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