Explain the difference between plasmogamy and karyogamy
What will be an ideal response?
ANSWER: Plasmogamy is the fusion of two cells so they share a common cytoplasm but keep the two
original nuclei separate. It results in a cell that has two distinct nuclei, also called a
dikaryon, with ploidy of n + n. Karyogamy is the fusion of the two nuclei; when this
occurs, the cell ceases being an n + n dikaryon and instead becomes a true 2n diploid cell.
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A) R factor B) F+ C) the phage Mu D) the chromosome
Which transporter is an example of a passive transporter in animals?
a. Sodium b. Starch c. Glucose d. Calcium e. Phosphate
All of the following characteristics apply to the organism in Figure 21-2 EXCEPT?
a. marine reptile b. lived during the Triassic period c. body form resembled a porpoise d. large eyes e. enlarged sharp claws
List at least three environmental agents or factors that are known to cause cancer
What will be an ideal response?