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What happens when allolactose levels increase in E. coli?

You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are closely linked on the same chromosome, what would you expect to see in the F2 generation?  Assume that crossing over can occur between these two genes.

If a plant species exhibits maternal inheritance for leaf pigmentation, what is the phenotype of the parents of a variegated (green and white leaves) plant?

Which of the following events occur during meiosis but not during mitosis?

Consider an organism whose diploid karyotype shows it to have a total of 60 chromosomes. How many chromosomes would be contained in the sperm of this organism? 

A unit of DNA that contains multiple structural genes and is under the control of a single promoter is called

Hemophilia is an X-linked, recessive disorder. A couple, neither of whom has hemophilia, produces a son with hemophilia. Which of the following statements is true?

Which produces short sequences of RNA, which allows polymerase to synthesize a new strand of DNA?

The karyotype of a young patient shows two Barr bodies per cell. What condition might this child have?

What mechanism is used by a bacterial cell to fit its DNA into the nucleoid region?