If your mother and father are both heterozygous for Huntington disease, which is caused by a
dominant allele, the odds of your having the disorder are
a. 1/4.
b. 1/2.
c. 3/4.
d. 1.
e. 0.
C
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The P-site
A. is found on the polymerase enzyme. B. is an allosteric site. C. is a promoter site. D. is the peptidyl site on the ribosome. E. is an allosteric site AND is a promoter site.
During which stages of cellular respiration is CO2 released?
a. glycolysis b. pyruvate oxidation c. citric acid cycle d. electron transport system e. both pyruvate oxidation and citric acid cycle
When describing food webs, the term "everything is connected to everything" is fitting. Why?
a. Decomposers break down organic material from all organisms. b. Animals in an ecosystem share resources. c. Producers are always at the first trophic level. d. Each species in a food web is typically two links away from all other species. e. Extinction of any species in a food web has a very low potential impact on other species.
What is the relationship between the degree of crossing over and the distance between two genes?
A) It is direct: as the distance decreases, the frequency of recombination increases. B) It is direct: as the distance increases, the frequency of recombination increases. C) It is indirect: as the distance increases, the frequency of recombination doubles. D) There is no correlation. E) It is indirect: as the distance decreases, the frequency of recombination doubles.