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How many pairs of chromosomes do humans have?
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
A man carrying the allele for Huntington's disease marries a woman who is homozygous recessive for the allele. What is the probability that their offspring will develop Huntington's disease?
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
The trait that is hidden by the presence of an overpowering trait is:
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
A _______________ is a chart or family tree that tracks which members of a family have a particular trait.
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
If a human is a girl, her sex chromosomes are:
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
Which alleles indicate an organism that is hybrid for a trait?
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
You and your colleagues are constructing a pedigree for a patient with cystic fibrosis. The individual's brother has also been diagnosed with cystic fibrosis. How would this brother be represented in the pedigree?
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
An individual has type AB blood. His father has type A blood and his mother has type B blood. The individual's phenotype is an example of ____.
shaded square
recessive
50%
23
Bb
Co-dominance
pedigree
XX
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