A mutation in the DNA of C. elegans means ____________________
a. there may be a change in a single nitrogenous base
b. there may be a change in the type of sugar in the backbone of DNA
c. it will code for a different lipid molecule
d. it will have a different start codon
A
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The vertebral arches surround and protect the
A) vertebrae. B) ribs. C) cranial nerves. D) spinal cord. E) spinal nerves.
Drugs used to treat malaria include ________.
A. qualaquin B. metronidazole C. chloroquine D. chloroquine and qualaquin
Subtelomeres are blocks of homologous DNA sequences close to the ends of chromosomes
In a worldwide population of humans, when sequences of chromosomes 4q and 10q subtelomeres were analyzed only 17 4q and 8 10q haplotypes were found among African, European, and Asian groups. Which of the following might be among the results or conclusions of this analysis? A) finding that few or no interchromosomal exchanges can occur among these chromosomes B) a conclusion that all haplotypes were present before the human population migrated from Africa C) reporting that haplotype polymorphism shows no response to natural selection D) finding greater than 80% variation between homologous ends of chromosomes in humans E) a conclusion that assigning chromosomal origin of repeat arrays by using specific restriction enzymes is possible only in a population with the same ethnic origin
The process in which carbon from an inorganic source, such as carbon dioxide, gets incorporated into an organic molecule is called ____________.
A. carbon fixation B. the Calvin–Benson cycle C. light-dependent reaction D. metabolic regeneration E. phosphate-group transfer