To experimentally determine the function of an annotated gene, a researcher may _____
a. look for similar gene sequences of known function
b. examine the putative protein structure
c. perform a gene knockout
d. find a pseudogene for the gene
e. determine the amino acid sequence
ANSWER: c
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In the United States and other developed countries, deaths due to infectious diseases are decreasing
Indicate whether the statement is true or false.
A sign that mutation occurred in a person exposed to radiation in the aftermath of the Chernobyl disaster of 1986 was
A) acute radiation sickness in the exposed person. B) short DNA repeats in a child's genome that didn't match the size in either exposed parent. C) increased rates of asthma and allergies in the exposed people and their children. D) a child that failed an Ames test.
An individual with a large, high quality territory is likely to have
A) a reduced number of offspring. B) decreased male-male interactions. C) increased mating success. D) reduced resources.
Suppose that a homeotic gene from Drosophila is introduced into an Arabidopsis embryo that has a pre-existing mutation in one of its homeotic flower genes. What effect would you expect and why?
A) rescue (or negating) of the phenotype of the mutant because the fly Hox gene supplies the missing protein B) correction of the sequence in the mutant by recombination with the Drosophila gene sequence C) expression of the Drosophila homeotic gene correcting the mRNA of the mutant plant D) a mixture of roughly equal numbers of Drosophila and plant gene product, producing an intermediate phenotype E) no effect, because Hox genes are different from MADS box genes