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Bitmap Image  |  1995-06-29  |  79.5 KB  |  510x394  |  8-bit (143 colors)  |  [TEXT/LMAN]
   ocr: HOW SEX Is DECIDED - - - - - - XX XX XY Female Male This lioness is This lion is female because the male because the sperm from ber - - sperm. from bis X father chromosome. carried an XX L y - - à - - - a - - - XY father Ychromosome. carrieda Av N one ANIMAL'S pair of sex is chromosomes, decided by the just sex are. carry XY. only Eggs an X made by chromosome. a female can Sperms chromosomes. Inmammals, females made by a male can carry either an have two identical sex chromosomes, Xora Yc chromosome. If the egg is called the X chromosomes because fertilized by an X-carrying sperm, oftheir shap ...