Mendel chose the garden pea for his work on inheritance for which of the following reasons? Check all that apply.
_____ Some traits in pea plants are controlled by one dominant allele and one recessive allele.
_____ Earlier investigators had shown segregation among the offspring.
_____ A large number of true breeding varieties were available.
_____ The generation time was short; many offspring can be grown easily.
_____ He could choose to self- or cross-pollinate.
_____ Some traits in pea plants are controlled by one dominant allele and one recessive allele.
__X__ Earlier investigators had shown segregation among the offspring.
__X__ A large number of true breeding varieties were available.
__X__ The generation time was short; many offspring can be grown easily.
__X__ He could choose to self- or cross-pollinate.
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Most known plant viruses have ________-strand RNA genomes, because small genomes ________
A) negative / facilitate cell-to-cell transfer B) positive / facilitate cell-to-cell transfer C) negative / interact more readily with host DNA D) positive / interact more readily with host DNA
In what sense is genetics the key to all of biology?
What will be an ideal response?
Nematocysts are triggered to fire by ________
a. stimulation to the nerve net b. a voluntary action of the animal c. a touch to the lid d. a touch to the modified cilium trigger
A gene that codes for a protein was removed from a eukaryotic cell and inserted into a prokaryotic cell. Although the gene was successfully transcribed and translated, it produced a different protein than it produced in the eukaryotic cell. What is the most likely explanation?
A. Eukaryotic genes often contain introns while prokaryotic genes do not. B. Eukaryotic transcripts have a 5' cap while prokaryotic transcripts do not. C. There are slight differences in the genetic code for prokaryotes and eukaryotes. D. Unlike eukaryotes, which have three different RNA polymerases, prokaryotes have a single RNA polymerase.