There are 3 alleles that lead to the ABO blood types. How many alleles does an individual inherit from their parents?
A. 1
B. 2
C. 3
D. 4
E. None of the choices is correct.
Answer: B
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Describe a method developed by molecular biologists to easily observe the success of a genetic engineering procedure involving the ligating of a gene of interest into a plasmid
What will be an ideal response?
A single human cell encloses about 1.5 meters of DNA containing 4.5 billion base pairs. How far apart are these base pairs in the DNA?
a. 3.3 × 10^?10 nm b. 3.3 × 10^10 nm c. 3 × 10^9 nm d. 300 nm e. 0.33 nm
The displacement loop (D-loop) may be a characteristic of
A) centromeres. B) telomeres. C) A-DNA. D) B-DNA. E) Z-DNA.
Some beetles and flies have antler-like structures on their heads, much like male deer do. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of _____
A) convergent evolution B) a synapomorphy C) homology D) parsimony