A and a are dominant and recessive alleles, respectively, of the same gene. Which genotype(s) would result in an individual with the dominant phenotype?
A) AA and aa B) only Aa C) only AA D) AA and Aa E) Aa and aa
Answer: D
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The loss of genetic information no longer needed for an intracellular existence by an obligate parasite is called genomic ________ .
Fill in the blank(s) with the appropriate word(s).
Three-quarters of the substantial amount of energy consumed by the brain is used to run a single molecular machine that maintains the resting potential of neurons. What is this machine called?
A. K+ leak channel B. sodium-potassium pump C. acetylcholine receptor D. voltage-gated sodium channel E. voltage-gated calcium channel
Presently, the replacement fertility rate in developed countries is ____
a. 2.0 b. 2.1 c. 2.4 d. 2.6 e. 2.8
The two leaflike organs which may flank the base of the petiole where it joins the stem are called
A. blades. B. palisades. C. Casparian strips. D. stipules. E. pericycles.