In this punnett square, what is the ratio of homozygous offspring? in the punnett square. what percentage of the offspring are homozygous recessive?

50% of the offspring would be homozygous recessive because from the squares that are filled we can see that the two parent sets of alleles are Tt and tt. If you filled in the entire punny square you'd get 50% of possibilities being tt, or homozygous recessive.