Haploinsufficiency ____
a. produces Barr bodies
b. results from elevated gene dosage
c. occurs when a diploid organism has only one functional copy of a gene
d. occurs due to gene duplication
e. refers to the loss of a whole set of chromosomes
ANSWER: c
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Within the peptidoglycan layer, the crossbridges that connect the chains of alternating sugar molecules extend between _______ .
a) two N-acetylmuramic acid molecules b) an N-acetylmuramic acid and an N-acetylglucosamine c) two glucose molecules d) two N-acetylglucosamine molecules
Which of the following is one of two or more gene variants that determine a particular trait for a characteristic?
a. allele b. karyotype c. euploid d. aneuploid
The immediate ancestors of the genus Australopithecus is believed to be the genus:a
Aegyptopithecus. b. Pongo. c. Pan. d. Sahelanthropus. e. Ardipithecus
A scale used to indicate the strength of an acid or base is called a ____ scale.
A. thermodynamic B. aquatic C. pH D. reduction