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What is the purpose of using a pedigree?
A
to study the causes of traits that are acquired during an organism’s lifeB
to understand patterns of inheritance in organismsC
to determine mating patterns in organismsD
to identify traits that are acquired during an organism’s life2
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Which pedigree symbol is used to represent a female carrier of a recessive X-linked trait?
A
An empty circle.
B
A half-filled circle.
C
An empty square.
D
A filled square.
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Which statement is always true when describing sex-linked inheritance?
A
It results in a dominant trait.B
The alleles are found on the X or Y chromosome.C
The resulting trait is influenced by multiple alleles.D
It is affected by alleles on at least three different chromosomes.6
Which is not considered a sex-linked trait?
A
purple flower color in pea plantsB
eye color in fruit fliesC
red-green color blindness in humansD
hemophilia in humans6
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