Prader-Willi syndrome is a genetic disorder involving a partial deletion of chromosome 15q on the paternal chromosome. When both copies of a gene (or chromosome) are functional but only one is expressed, this is an example of __________
A) position effect variegation
B) X-inactivation
C) genomic imprinting
D) histone acetylation
E) chromatin modifications
C
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Which group of Eukarya has complicated the phylogenetics of the domain by first being thought of as ancient to the more recent view of them being highly derived eukaryotes?
A) dinoflagellates B) fungi C) hydrogenosome-containing eukaryotes D) stramenopiles
Mapping human disease genes to their position on the chromosome using genetic polymorphisms is called:
A. outgrouping. B. haplotyping. C. linkage analysis. D. synteny. E. comparative genomics.
In eukaryotes, DNA is transcribed in the _____
a. mitochondria b. cytoplasm c. ribosomes d. nucleus e. endoplasmic reticulum
Which statement about natural selection is true?
A. It can have an evolutionary effect only if phenotypic differences are heritable. B. It is the same as evolution. C. It acts directly on genotypes. D. Changes in allele frequencies can occur only because of natural selection. E. It always results in reduced genetic variation.