Biology: The Dynamics of Life, California Edition

Section 1: Mendelian Inheritance of Human Traits

Mendelian Inheritance of Human Traits

Your Results:

The correct answer for each question is indicated by a .

1.			Which of these statements about Huntington's disease is true? Need a Hint?
			A)	Genetic tests to detect the presence of the allele responsible for Huntington's disease do not exist at this time.
			B)	Huntington's disease is caused by the expression of a recessive allele.
			C)	The onset of Huntington's disease is typically between birth and three years of age.
			D)	There is currently no effective treatment of Huntington's disease.
2.			People who have ancestors from which of these countries typically have a higher incidence rate of PKU? Need a Hint?
			A)	South Africa
			B)	England
			C)	Sweden
			D)	Greece
3.			When making a pedigree, which of these symbols is used to represent an affected male? Need a Hint?
			A)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch12_0_a.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>
			B)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch12_0_b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>
			C)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch12_0_c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>
			D)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch12_0_d.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>
4.			What is polydactyly? Need a Hint?
			A)	A condition characterized by the formation and accumulation of thick mucus in the lungs and digestive tract.
			B)	A condition characterized by having the absence of an enzyme that converts phenylalanine to tyrosine.
			C)	A condition characterized by having six fingers.
			D)	A condition characterized by the accumulation of lipids in cells.
5.			Which of these is NOT an example of a simple dominant trait? Need a Hint?
			A)	cystic fibrosis
			B)	a widow's peak hairline
			C)	a hitchhiker's thumb
			D)	a cleft chin

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