27. With a backcross a heterozygous individual times homozygous recessive individual, what will the resulting phenotype ratio would be?
T |
t |
|
|---|---|---|
t |
Tt |
tt |
t |
Tt |
tt |
Remember that a backcross is one that involves one of the original parents times one that is pure breeding for a trait and is completly recessive. Looking at the table above, one parent is "Tt" the other parent is "tt". The results are that 50% one type"Tt" and 50% the other type "tt"or a 1:1 ratio.