DNA vaccines ____
a. use RNA to assist in the transformation process
b. have been created but are ineffective
c. show promise in animal studies and are now in clinical trials
d. have been approved by the government to fight several diseases
e. sometimes infect the subject with the disease it's attempting to fight
c
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The additive model for polygenic inheritance proposes that the genes controlling a trait are all on one chromosome
a. True b. False Indicate whether the statement is true or false
The process of adding hydrogen to N2, creating NH3 and eventually NH4+, and which requires a substantial input of ATP, is called ____.
a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation
A(n) ____________________ is the interacting populations of all the species in a habitat. Fill in the blank(s) with the appropriate word(s)
Anaphase of mitosis occurs when:
a) the chromatids begin to separate from the metaphase plate. b) the chromosomes line up on the 'equator'of the cell. c) the cell enters interphase. d) the chromatin coils into thicker, visible chromatids. e) the nuclear envelope first breaks down.