A P-generation cross was made between a true-breeding plant…
A P-generation cross was made between a true-breeding plant with yellow/round seeds and a true-breeding plant with green/wrinkled seeds. All of the F1 seeds were yellow/round. If the F1 offspring were self-fertilized, what is the expected F2 phenotypic ratio?
Read DetailsYou cut some sheep DNA and some plasmid DNA with the same r…
You cut some sheep DNA and some plasmid DNA with the same restriction enzyme. The plasmid contains an AmpR gene and a lacZ gene. You mix together the fragments of sheep DNA and the linearized plasmid. You transform bacteria with your mixture, and plate the bacterial cells on growth media containing the antibiotic ampicillin and X-gal (the substrate of beta-galactosidase). You need to pick some bacterial colonies that contain recombinant plasmids. Which colonies do you choose?
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