If you are also Mike, please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
If not, you are right!
A variety of snail has an inherited condition that affects the thickness of the shell. The alleles are t and n.
tt have thick shells
tn have thin shells
nn do not survive
Two heterozygous snails are mated. What is the probability that a surviving snail of the next generation is a heterozygote?
My workings:
So a tn snail mates with another tn snail, and they would get a tt, tn, tn, and nn right?
That means 3 out of 4 survives.
and the heterozygotes are the tn snails, so is the answer 2/3???
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