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1
Genes
A)are portions of DNA that determine characteristics.
B)are located at specific points called loci (sing.=locus).
C)may have different forms known as alleles.
D)All of the above.
2
If a dominant gene is present but not expressed in a population, this situation is referred to as
A)variable expressivity.
B)lack of penetrance.
C)environmental interference.
D)either a single- or double-factor cross, depending on the traits involved.
3
Body size is determined by the interaction of numerous alleles. This is an example of
A)autosomes.
B)pleiotropy.
C)single-factor crosses.
D)polygenic inheritance.
4
A woman with blood type O and a man with blood type AB have a child together. What are the possible blood types of this child?
A)AB or O
B)A, B, or O
C)A or B
D)AB, A, B, or O
5
She has really long fingers and toes and is exceptionally tall. This is a statement of
A)genotype.
B)phenotype.
C)monohybridization.
D)locus placement.
6
Chromosomes that carry the genes that determine the sex of an individual are called ____________.
A)autosomes
B)sex chromosomes
C)anthers
D)homologous chromosomes





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