Transduction is defined as the:
a. change of the bacterial genotypes through the exchange of DNA from one cell to another.
b. internal change in the original nucleotide sequence of a gene or genes within an or-ganism's genome.
c. process by which genetic elements such as plasmids and transposons excise from one genomic location and insert into another.
d. mechanism that is mediated by viruses, by which DNA from two bacteria may come together in one cell, thus allowing for re-combination.
D
Bacteriophages, viruses that infect bacteria, integrate their DNA into the bacterial cell's chro-mosome, in which viral DNA replication and expression is directed; thus, the DNA is dispersed to another bacterium when other cells are infected.
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In eukaryotes, translation takes place
A. on the plasma membrane. B. inside the nucleus. C. on ribosomes. D. on the nuclear membrane. E. on spliceosomes.
A larynx is found at the beginning of each insect trachea
Indicate whether the statement is true or false.
Four of the following are true about water molds. Which one is the exception?
a. Water mold is responsible for the Irish potato famine. b. Some species are aquatic parasites. c. Most act as decomposers. d. Their filaments are composed of haploid cells. e. They are heterotrophs.
What are the main differences in the formation of the egg and sperm in males and females?
What will be an ideal response?