Cats can have long tails (LL) or have no tail, which is called a bob tail cat (NN).  The intermediate tail length, medium, is a result of the heterozygous condition. Cross a long tail cat with a medium tail cat.  Give the genotype and phenotype percentages. 

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in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: