Individuals with the same genetic background and a high degree of homozygosity are said to be isogenic. Of what value are isogenic strains in genetic studies?
What will be an ideal response?
Because the genetic background is the same (or at least very similar), phenotypic variation must be due to nongenetic factors.
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The majority of all known animal species are:
A. flowering plants. B. cnidarians. C. vertebrates. D. insects.
During the cephalic and absorptive phases, the pancreas releases a great deal of __________ into the blood stream and very little __________.
Fill in the blank(s) with the appropriate word(s).
Mosquitoes serve as vectors in all of the following viral diseases, except:
A) dengue fever. B) hepatitis. C) West Nile virus disease. D) yellow fever.
PCR produces
A. DNA fragments of all possible sizes. B. DNA fragments that are one nucleotide larger than the next fragment. C. DNA fragments of a particular size. D. DNA fragments of increasing size. E. DNA fragments that are one nucleotide larger than the next fragment AND DNA fragments of increasing size.