The following F2 phenotypic data was obtained from a Drosophila testcross using an F1 offspring. Assume red eye and brown body are dominant wild-type phenotypes, and white eye and yellow body are mutant phenotypes. White-eye, brown body 670
Red-eye, yellow body 650
White-eye, yellow body 38
Red-eye, brown body 56

Are the genes linked?How do you know this?
Class the F2 phenotypes as Parenteral or recombinant?
What is the genotype of the testcross individual?

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei.