According to the principal of dominance, if a recessive gene for tallness is paired with another recessive gene for

tallness, the organism

will be tall

may be tall or short

will be short

According to the principal of dominance, if a recessive gene for tallness is paired with another recessive gene for tallness, the organism will be tall.

Explanation:

According to the law of dominance, parent having contrasting characteristic and is a true breeder, will be allowed to breed. The trait is dominant, which will be seen in the next generation. Dominant trait masks the expression of the recessive trait. Recessive trait will only appear only when the genotype will be 'homozygous recessive'. In this case recessive gene for tallness will be paired with another recessive gene, this will result in homozygous recessive genotype.