A trait with incomplete penetrance is one that:
A. is only expressed in homozygous
recessive individuals.
B. is only expressed in homozygous
dominant individuals.
C. is only expressed in some of the
individuals that have the genotype for that
trait.
D. is expressed in only some offspring of
affected individuals.
E. can be expressed differently in different
individuals that have the genotype for that
trait.
C
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The type of chromosome abnormality that yields a long chromosome consisting of most of two acrocentric chromosomes is a(n)
A) Robertsonian translocation. B) pericentric inversion. C) paracentric inversion. D) reciprocal translocation.
Cri-du-chat syndrome results from a(n)
a. deletion. b. inversion. c. translocation. d. duplication. e. aneuploidy.
The figure labeled “B” shows a cross-section through
a __________ and a vascular bundle. a. monocot stem b. eudicot stem c. monocot root d. eudicot root e. none of these
Macroevolution is _____
A) the same as microevolution, but includes the origin of new species B) evolution above the species level C) defined as the evolution of microscopic organisms into organisms that can be seen with the naked eye D) defined as a change in allele or gene frequency over the course of many generations