The reason for the spontaneous abortion of almost all 45, X fetuses is unknown. Indicate whether the statement is true or false
T
You might also like to view...
Feeding behavior with a high energy intake-to-expenditure ratio is called _____
A) herbivory B) autotrophy C) heterotrophy D) search scavenging E) optimal foraging
Which of the following enzymes would you expect to find in the virion of a retrovirus, but NOT in a bacteriophage?
A) lysozyme B) methylase C) restriction enzymes D) reverse transcriptase
The common bread mold Rhizopus stolonifer belongs to the ________.
A. Zygomycota B. Ascomycota C. Glomeromycota D. Basidiomycota
Why is combination drug therapy less likely to lead to resistance than single drug therapy?
A) In the presence of multiple drugs, the mutation rate of HIV decreases. B) The drugs improve the immune system so that it's better able to find and remove virus particles. C) The likelihood of one virus spontaneously mutating to be resistant to three different drugs is extremely small. D) There are fewer side effects associated with combination drug therapy, and the appearance of resistance is directly proportional to the severity of side effects.