Glencoe Biology

Section 3: Gene Linkage and Polyploidy

Self-Check Quizzes

1.
Polyploidy is the occurrence of one or more extra sets of ____ in an organism.
A)chromosomes
B)zygotes
C)phenotypes
D)diploids
2.
Which of these applies to genetic recombination?
A)no formula can calculate gene combinations
B)genes are prevented from combining
C)gene combinations are produced by crossing over
D)involves glucose production
3.
What does this figure represent?
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078757134/383934/iw.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"> (20.0K)</a>
A)gene linkage during meiosis
B)gene segregation during gamete formation
C)gene segregation during meiosis
D)formation of a single parent cell
4.
Crossing over results in ____.
A)the removal of genotypes from a zygote
B)less genetic variation
C)fewer combinations of genes
D)greater genetic variation
5.
Which statement is not true of genes located close together on the same chromosome?
A)They travel together during gamete formation.
B)They always segregate independently.
C)They are linked together.
D)They do not segregate independently.
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