Need help with biology question?!!?

Posted on 2017-04-20 19:21:00 in Biology by SANAZ

Guinea pigs,which were homozygous for long, black hair were crossed with ones which were homozygous for short, white hair. All the F1 offspring had short, black hair. 

1) Using suitable symbols, draw a genetic diagram to explain this result. 
2) Complete a punnett square to show the results of interbreeding the F1 offspring. 

Any help would be appreciated!

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