In dosage compensation, females have the same amount of X-linked gene products as males. This is
brought about by
A. the loss of one X chromosome from all somatic cells in females.
B. the accelerated production by genes on the Y chromosome.
C. the lowered rate of synthesis by genes on the X chromosome.
D. the inactivation of one X chromosome in all somatic cells of females.
E. none of these.
D
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Which of the following best describes the kind of resource for which individuals may
A. It will most likely be food or some form of nutrient. B. It will most likely be related to space or shelter. C. It will most likely be related to reproduction, such as access to mates. D. It will most likely be related either to food, nutrients, space, or shelter. E. It can be any resource that is limited in the environment.
Cytotoxic T cells destroy cancerous cells by
A. forming the membrane attack complex. B. releasing vesicles containing perforin. C. activating natural killer cells. D. opsonization. E. secreting cytokines.
While you are riding the ski lift up to the top of the mountain on a very cold day you start to shiver involuntarily. You know that the shivering is your body?s attempt to help regulate your body temperature and is an example of what type of mechanism?
A. sensitivity B. evolutionary adaptation C. homeostasis D. energy utilization
In prokaryotes, transcription occurs in the _____
a. mitochondria b. cytoplasm c. ribosomes d. nucleus e. endoplasmic reticulum