In the garden peas example above, a tall plant with white flowers crossed with a dwarf plant with
purple flowers produces all tall offspring with purple flowers. What is the genotype of the parents? What will be an ideal response?
DD pp ? dd PP
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The restriction enzymes BamHI and BclI cut at the points indicated by arrows: If one sample of DNA was cut with BamHI and another with BclI, and these two samples were mixed and treated with DNA ligase, what would occur?
A) No DNAs would be ligated (joined together). B) Only the BamHI-cut DNA would be ligated. C) Only the BclI-cut DNA would be ligated. D) Both BamHI-cut and BclI-cut DNAs would be ligated, but only to DNA fragments cut with the same enzyme (for example, BamHI fragments would be ligated only to other BamHI fragments). E) Both BamHI-cut and BclI-cut DNAs would be ligated with no preference for which fragment is ligated to which other.
What is the function of histone proteins?
A. organize DNA in eukaryotic chromosomes B. connect chromosomes to the mitotic spindle C. organize the microtubules that make up the spindle D. attach sister chromatids together
You perform comparative genomic hybridization. Instead of using cancer cells, you accidentally make both red and green DNA molecules from normal tissue. What will your ratio of green fluorescence to red fluorescence be?
A. 0 B. 1 C. 2 D. There will be no signal.
The initial encounter with an allergen is called the ________ dose.
A. sensitizing B. hypersensitivity C. provocative D. desensitizing E. allergic