Which of the following is not correct concerning epistatic interactions?
A. They can be associated with enzymatic pathways.
B. They produce variations in the expected 9:3:3:1 ratio of a dihybrid cross.
C. They can result when a gene at one locus masks the expression of a gene at a different locus.
D. They always result in a 9:7 ratio of a dihybrid cross.
E. They are due to gene interactions.
D
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In labyrinthulids, the nonflagellated stage of the life cycle features spindle-shaped cells that form complex colonies that glide rapidly along an ________ net made by the organism.
A. protoplasmic B. ectoplasmic C. pellicular D. endoplasmic
. Prions are small single-stranded pieces of RNA
Indicate whether this statement is TRUE or FALSE.
Sequencing of genomes of eukaryotes, both mitochondrial and nuclear, have revealed evidence of sequence transfer from one to the other. Are such transfers ancient, recent, or both?
What will be an ideal response?
Compared with 31P, the radioactive isotope 32P has
A) a different atomic number. B) one more proton. C) one more electron. D) one more neutron.