Answer:
frequency of the blue (B) allele 
frequency of the red (R) allele 
The number of blue plants expected is 
The number of red plants expected is 
The anticipated number of violet plants is 
Calculated chi square value
Explanation:
Frequency of blue allele is
Frequency of blue allele is equal to sum of frequency of BB and half of frequency of BR

Frequency of other allele

Chi Square test
See the attached file
The number of blue plants expected is 
The number of red plants expected is 
The anticipated number of violet plants is 
Calculated chi square value
If a white person had children with a black person, not all of their children would be black, but majority of them would. There is a 75% chance each time the parents have an offspring that the child will be black. It would not matter if the black person was the mother or the father, because either way they are the dominant trait, and according to the punnet square, that is all that matters and that will effect the outcome.
Answer: c or a because they are water animals
Explanation:
An hypotheses plays an educated guess in the scientific inquiry.