What features of meiosis allow for the independent assortment of chromosomes?

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?

The functional group that forms a covalent bond between peptide chains and stabilizes protein tertiary structure is __________.

Which of the following is not an example of cytoskeletal filament?

What could be done better or differently?

An activator is to an enhancer as a(n) _____ is to a silencer.

 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?

Which of the following organisms is diploid dominant?

In cats, the gene for coat color is found on the X chromosome. Shown below is a mass of cells making up an early female cat embryo. The X chromosomes are shown in each cell; this embryo has one orange coat color allele (O) and one black coat color allele (B). Which of the following is ACCURATE about this embryo?

Reverse transcriptase is an enzyme that can synthesize DNA from an RNA template. Which DNA sequence is produced from an RNA molecule with the sequence 5’AUUGACGGU3′?