What type of aneuploidy is responsible for Turner syndrome in humans?
A) trisomy 13
B) trisomy 18
C) trisomy 21
D) monosomy XO
E) monosomy YO
D
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Because geneticists can't use human subjects for experimentation, a ____ is used to obtain an analysis
of a genetic family history. a. blood test b. hair sample. c. tooth impression. d. pedigree chart. e. photograph analysis.
In areas where malaria is endemic, sickle cell disease heterozygote carriers are less fit than individuals
homozygous for the normal allele. Indicate whether the statement is true or false.
Which one of the following forms a bilayer structure that is found in cell membranes?
A) triglycerides B) amino acids C) cholesterol D) phospholipids E) saturated fats
Regarding the human sex chromosomes, which statement is correct?
A) X and Y are different in size but carry nearly equal numbers of genes. B) The X chromosome carries only gender-related genes. C) The X chromosome carries more genes than does the Y chromosome. D) The Y chromosome carries a greater number of genes than does the X chromosome. E) The X chromosome carries the genes for the development of male phenotype.