Asked by jessica

the smiths have four chilkdren,all girls. thier fifth is a boy. why did this change occur?
a)the conception classes taken by the parents.
b)the mother copntribution of a y chromosome
c)the fathers contribution of a y chromosome
Answered by bobpursley
I assume the Smiths are mammals (if they are birds, it is different).

See g2 on this link.

http://www.biol.andrews.edu/gen/l7.htm
Answered by jessica
THE SMITH HAVE FOUR CHILDREN,ALL GIRLS.THEIR FIFTH CHILD IS A BOY.WHY DID THIS CHANGE OCCUR?
A)THE CONCEPTION CLASSES TAKEN BY THE PARENTS
B)THE FATHERS CONTRIBUTION OF A Y CHROMOSOME.
C)THE MOTHERS CONTRIBUTION OF A Y CHROMOSOME.
Answered by jairo
the father contribution of a y chromosome
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