In human reproduction, the X-and Y-chromosomes determine gender. Is the X-chromosome associated with male or female characteristics?See you in class, teacher Silvia
You can replace this text by going to "Layout" and then "Page Elements" section. Edit " About "
By Teacher Silvia
eslstudentsblog. Blog Design by Gisele Jaquenod and Birdie
0 comments:
Post a Comment