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Which of these traits is controlled by a gene with multiple alleles?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
What is a pedigree?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
What controls variations in skin color among humans?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
Which of these human traits is altered by variations in environment?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
Why does height in humans have such a wide variety of phenotypes?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
Why are sex-linked traits more common in males than in females?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
What are multiple alleles?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
What factors can affect a person’s height?
a chart that tracks which members of a family have a particular trait
both genes and environmental factors
blood type
smile dimples
two alleles of a single gene
three or more chromosomes that determine a trait
All alleles on the X chromosome are dominant.
height is controlled by at least four genes.
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