<span>When a testcross between f1 dihybrid flies produces
more offspring with both traits like those of one parent, or the other than
offspring with recombinant-type traits are produced means that the two genes are
link. The reason that linked genes are inherited together is that they are
located on the same chromosome.</span>
The DNA tells a ribosome how to assemble a protein.
Answer:the first one I believe!
Explanation:
Sorry if it is wrong I have already done this and I pretty sure it’s the first one!
Fetus can survive an extra copy of a chromosome, but being hemizygous is <span>usually fatal</span>